TY  - CONF
AU  - Rajić, Nevenka
AU  - Stojaković, Đorđe
AU  - Jevtić, Sanja
AU  - Jovanović, Mina
AU  - Zabukovec Logar, Nataša
AU  - Mazaj, Matjaž
AU  - Kaučič, Venčeslav
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5209
PB  - University of Nova Gorica, Slovenia
C3  - 11th European Meeting on Environmental Chemistry - Book of Abstracts
T1  - On the removal of aqueous manganese, nickel and zinc ions using the natural clinoptilolite
SP  - 181
UR  - https://hdl.handle.net/21.15107/rcub_technorep_5209
ER  - 

@conference{
author = "Rajić, Nevenka and Stojaković, Đorđe and Jevtić, Sanja and Jovanović, Mina and Zabukovec Logar, Nataša and Mazaj, Matjaž and Kaučič, Venčeslav",
year = "2010",
publisher = "University of Nova Gorica, Slovenia",
journal = "11th European Meeting on Environmental Chemistry - Book of Abstracts",
title = "On the removal of aqueous manganese, nickel and zinc ions using the natural clinoptilolite",
pages = "181",
url = "https://hdl.handle.net/21.15107/rcub_technorep_5209"
}

Rajić, N., Stojaković, Đ., Jevtić, S., Jovanović, M., Zabukovec Logar, N., Mazaj, M.,& Kaučič, V.. (2010). On the removal of aqueous manganese, nickel and zinc ions using the natural clinoptilolite. in 11th European Meeting on Environmental Chemistry - Book of Abstracts
University of Nova Gorica, Slovenia., 181.
https://hdl.handle.net/21.15107/rcub_technorep_5209

Rajić N, Stojaković Đ, Jevtić S, Jovanović M, Zabukovec Logar N, Mazaj M, Kaučič V. On the removal of aqueous manganese, nickel and zinc ions using the natural clinoptilolite. in 11th European Meeting on Environmental Chemistry - Book of Abstracts. 2010;:181.
https://hdl.handle.net/21.15107/rcub_technorep_5209 .

Rajić, Nevenka, Stojaković, Đorđe, Jevtić, Sanja, Jovanović, Mina, Zabukovec Logar, Nataša, Mazaj, Matjaž, Kaučič, Venčeslav, "On the removal of aqueous manganese, nickel and zinc ions using the natural clinoptilolite" in 11th European Meeting on Environmental Chemistry - Book of Abstracts (2010):181,
https://hdl.handle.net/21.15107/rcub_technorep_5209 .

TY  - CONF
AU  - Rajić, Nevenka
AU  - Zabukovec Logar, Nataša
AU  - Šajić, Sanja
AU  - Stojaković, Đorđe
AU  - Kaučič, Venčeslav
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6406
AB  - Recently, a considerable interest has been directed towards the synthesis of hybrid organic-inorganic solids, which exhibit an enhanced structural versatility, original electronic, magnetic and
optical properties. Also, some of these crystalline metal-organic frameworks can reversibly occlude large amounts of gases, which makes them suitable for gas storage materials for hydrogen-fueled
vehicles and portable electronics. Rigid aromatic dicarboxylates have been explored as appropriate building units for construction of organic backbone, while zinc ions because of their ability to accommodate various coordination modes, have usually been selected to generate open architecture. Here we report the synthesis and structures of two metal-organic frameworks ZnBDC-I and ZnBDC-II (BDC - 1,4-benzenedicarboxylate). Both compounds have been isolated after crystallization of a nlixture containing zinc nitrate, N a2BDC and water. The crystallization was performed under microwave heating for 1 hour at 180 deg. C. The structure of I consists of metal-organic zigzag chains in which tetrahedral Zn centres are linked by BDU acting as bridging bidentate ligands. The structure of II is a 3-D network arising through interconnection of the
square-pyramidal Zn units and BDC ions. Each BDC is coordinated to four Zn atoms. It seems likely that interactions between zinc centres and the terminal C=O groups of the chains in I lead to the formation of the 3-D open framework II. This structural relationship between I and II gives an insight into the possible pathways in the building process of metal-organic networks. In accord with this observation it includes a transformation of I-D chain to 3-D open framework. (Crystal data for I are as follows: monoclinic system, C 2/c, a=1.50262(6), b=0.50422(2), c=1.21132(6) nm, beta=103.900(2)deg.; for II - monoclinic system, C 2/c, a=1.79978(5), b=0.63647(1), c=0.72657(2) nm, beta=91.467(1)deg.).
PB  - The Materials Research Society Symposium Proceedings Series
C3  - MRS Spring Meeting & Exhibit
T1  - Novel Metal-Organic Frameworks: Microwave Crystallization and Structure
EP  - 674
SP  - 667
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6406
ER  - 

@conference{
author = "Rajić, Nevenka and Zabukovec Logar, Nataša and Šajić, Sanja and Stojaković, Đorđe and Kaučič, Venčeslav",
year = "2005",
abstract = "Recently, a considerable interest has been directed towards the synthesis of hybrid organic-inorganic solids, which exhibit an enhanced structural versatility, original electronic, magnetic and
optical properties. Also, some of these crystalline metal-organic frameworks can reversibly occlude large amounts of gases, which makes them suitable for gas storage materials for hydrogen-fueled
vehicles and portable electronics. Rigid aromatic dicarboxylates have been explored as appropriate building units for construction of organic backbone, while zinc ions because of their ability to accommodate various coordination modes, have usually been selected to generate open architecture. Here we report the synthesis and structures of two metal-organic frameworks ZnBDC-I and ZnBDC-II (BDC - 1,4-benzenedicarboxylate). Both compounds have been isolated after crystallization of a nlixture containing zinc nitrate, N a2BDC and water. The crystallization was performed under microwave heating for 1 hour at 180 deg. C. The structure of I consists of metal-organic zigzag chains in which tetrahedral Zn centres are linked by BDU acting as bridging bidentate ligands. The structure of II is a 3-D network arising through interconnection of the
square-pyramidal Zn units and BDC ions. Each BDC is coordinated to four Zn atoms. It seems likely that interactions between zinc centres and the terminal C=O groups of the chains in I lead to the formation of the 3-D open framework II. This structural relationship between I and II gives an insight into the possible pathways in the building process of metal-organic networks. In accord with this observation it includes a transformation of I-D chain to 3-D open framework. (Crystal data for I are as follows: monoclinic system, C 2/c, a=1.50262(6), b=0.50422(2), c=1.21132(6) nm, beta=103.900(2)deg.; for II - monoclinic system, C 2/c, a=1.79978(5), b=0.63647(1), c=0.72657(2) nm, beta=91.467(1)deg.).",
publisher = "The Materials Research Society Symposium Proceedings Series",
journal = "MRS Spring Meeting & Exhibit",
title = "Novel Metal-Organic Frameworks: Microwave Crystallization and Structure",
pages = "674-667",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6406"
}

Rajić, N., Zabukovec Logar, N., Šajić, S., Stojaković, Đ.,& Kaučič, V.. (2005). Novel Metal-Organic Frameworks: Microwave Crystallization and Structure. in MRS Spring Meeting & Exhibit
The Materials Research Society Symposium Proceedings Series., 667-674.
https://hdl.handle.net/21.15107/rcub_technorep_6406

Rajić N, Zabukovec Logar N, Šajić S, Stojaković Đ, Kaučič V. Novel Metal-Organic Frameworks: Microwave Crystallization and Structure. in MRS Spring Meeting & Exhibit. 2005;:667-674.
https://hdl.handle.net/21.15107/rcub_technorep_6406 .

Rajić, Nevenka, Zabukovec Logar, Nataša, Šajić, Sanja, Stojaković, Đorđe, Kaučič, Venčeslav, "Novel Metal-Organic Frameworks: Microwave Crystallization and Structure" in MRS Spring Meeting & Exhibit (2005):667-674,
https://hdl.handle.net/21.15107/rcub_technorep_6406 .

TY  - JOUR
AU  - Tuel, Alain
AU  - Caldarelli, Stefano
AU  - Meden, Anton
AU  - McCusker, Lynne B.
AU  - Baerlocher, Christian Baerlocher
AU  - Ristic, Alenka
AU  - Rajić, Nevenka
AU  - Mali, Gregor
AU  - Kaučič, Venčeslav
PY  - 2000
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6400
AB  - The triclinic form of AlPO4-34, a microporous aluminophosphate with the chabazite (CHA) topology, adopts a rhombohedral symmetry upon calcination. The framework structure of this phase remains intact under ambient conditions, but it distorts dramatically, though reversibly, in the presence of water. Following these structural changes in situ by X-ray diffraction revealed that there are actually two stable rehydrated phases, which differ from each other by one water molecule in the channel. Both of these phases have triclinic unit cells that are closely related to that of the calcined rhombohedral phase. The structure of the low-temperature (10 °C), fully rehydrated phase (phase B) was elucidated by combining high-resolution synchrotron powder diffraction with solid-state NMR techniques. Coordination of three of the six Al atoms to water molecules causes the deformation of the framework and the reduction of the symmetry. Rietveld refinement of the structure of phase B in the triclinic space group P1 (a = 9.026, b = 9.338, c = 9.508 Å, α = 95.1°, β = 104.1°, and γ = 96.6°) converged with RF = 0.079 and RWP = 0.176 (Rexp = 0.087). Framework connectivities derived from the structure were used to assign 31P NMR lines as well as part of the 27Al NMR signal.
PB  - American Chemical Society
T2  - The Journal of Physical Chemistry B
T1  - NMR Characterization and Rietveld Refinement of the Structure of Rehydrated AlPO4-34
EP  - 5705
SP  - 5697
VL  - 104
DO  - 10.1021/jp000455a
ER  - 

@article{
author = "Tuel, Alain and Caldarelli, Stefano and Meden, Anton and McCusker, Lynne B. and Baerlocher, Christian Baerlocher and Ristic, Alenka and Rajić, Nevenka and Mali, Gregor and Kaučič, Venčeslav",
year = "2000",
abstract = "The triclinic form of AlPO4-34, a microporous aluminophosphate with the chabazite (CHA) topology, adopts a rhombohedral symmetry upon calcination. The framework structure of this phase remains intact under ambient conditions, but it distorts dramatically, though reversibly, in the presence of water. Following these structural changes in situ by X-ray diffraction revealed that there are actually two stable rehydrated phases, which differ from each other by one water molecule in the channel. Both of these phases have triclinic unit cells that are closely related to that of the calcined rhombohedral phase. The structure of the low-temperature (10 °C), fully rehydrated phase (phase B) was elucidated by combining high-resolution synchrotron powder diffraction with solid-state NMR techniques. Coordination of three of the six Al atoms to water molecules causes the deformation of the framework and the reduction of the symmetry. Rietveld refinement of the structure of phase B in the triclinic space group P1 (a = 9.026, b = 9.338, c = 9.508 Å, α = 95.1°, β = 104.1°, and γ = 96.6°) converged with RF = 0.079 and RWP = 0.176 (Rexp = 0.087). Framework connectivities derived from the structure were used to assign 31P NMR lines as well as part of the 27Al NMR signal.",
publisher = "American Chemical Society",
journal = "The Journal of Physical Chemistry B",
title = "NMR Characterization and Rietveld Refinement of the Structure of Rehydrated AlPO4-34",
pages = "5705-5697",
volume = "104",
doi = "10.1021/jp000455a"
}

Tuel, A., Caldarelli, S., Meden, A., McCusker, L. B., Baerlocher, C. B., Ristic, A., Rajić, N., Mali, G.,& Kaučič, V.. (2000). NMR Characterization and Rietveld Refinement of the Structure of Rehydrated AlPO4-34. in The Journal of Physical Chemistry B
American Chemical Society., 104, 5697-5705.
https://doi.org/10.1021/jp000455a

Tuel A, Caldarelli S, Meden A, McCusker LB, Baerlocher CB, Ristic A, Rajić N, Mali G, Kaučič V. NMR Characterization and Rietveld Refinement of the Structure of Rehydrated AlPO4-34. in The Journal of Physical Chemistry B. 2000;104:5697-5705.
doi:10.1021/jp000455a .

Tuel, Alain, Caldarelli, Stefano, Meden, Anton, McCusker, Lynne B., Baerlocher, Christian Baerlocher, Ristic, Alenka, Rajić, Nevenka, Mali, Gregor, Kaučič, Venčeslav, "NMR Characterization and Rietveld Refinement of the Structure of Rehydrated AlPO4-34" in The Journal of Physical Chemistry B, 104 (2000):5697-5705,
https://doi.org/10.1021/jp000455a . .

TY  - CHAP
AU  - Rajić, Nevenka
AU  - Zabukovec Logar, Nataša
AU  - Meden, Anton
AU  - Kaučič, Venčeslav
PY  - 1997
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6402
AB  - Two different open-framework cobalt-zincophosphate phases crystallise from the same reaction mixture at ambient conditions depending on the preparative procedure. One of them is a sodalite analogue containing up 70 8 wt.% of incorporated cobalt(II), in proportion to a molar fraction of cobalt(II) component in the reaction mixture. The other is anovel hexagonal phase with a three-dimensional tetrahedral framework structure containing one-dimensional six-ring channels. A helix built up of sodium cations and water molecules has been found inside the channel.
PB  - Marcel Dekker, Inc.
T2  - Synthesis of Porous Materials - Zeolites, Clays, and Nanostructures
T1  - Preparation of Two Cobalt-Substituted Zincophosphate Molecular Sieves
EP  - 242
SP  - 233
VL  - 69
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6402
ER  - 

@inbook{
author = "Rajić, Nevenka and Zabukovec Logar, Nataša and Meden, Anton and Kaučič, Venčeslav",
year = "1997",
abstract = "Two different open-framework cobalt-zincophosphate phases crystallise from the same reaction mixture at ambient conditions depending on the preparative procedure. One of them is a sodalite analogue containing up 70 8 wt.% of incorporated cobalt(II), in proportion to a molar fraction of cobalt(II) component in the reaction mixture. The other is anovel hexagonal phase with a three-dimensional tetrahedral framework structure containing one-dimensional six-ring channels. A helix built up of sodium cations and water molecules has been found inside the channel.",
publisher = "Marcel Dekker, Inc.",
journal = "Synthesis of Porous Materials - Zeolites, Clays, and Nanostructures",
booktitle = "Preparation of Two Cobalt-Substituted Zincophosphate Molecular Sieves",
pages = "242-233",
volume = "69",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6402"
}

Rajić, N., Zabukovec Logar, N., Meden, A.,& Kaučič, V.. (1997). Preparation of Two Cobalt-Substituted Zincophosphate Molecular Sieves. in Synthesis of Porous Materials - Zeolites, Clays, and Nanostructures
Marcel Dekker, Inc.., 69, 233-242.
https://hdl.handle.net/21.15107/rcub_technorep_6402

Rajić N, Zabukovec Logar N, Meden A, Kaučič V. Preparation of Two Cobalt-Substituted Zincophosphate Molecular Sieves. in Synthesis of Porous Materials - Zeolites, Clays, and Nanostructures. 1997;69:233-242.
https://hdl.handle.net/21.15107/rcub_technorep_6402 .

Rajić, Nevenka, Zabukovec Logar, Nataša, Meden, Anton, Kaučič, Venčeslav, "Preparation of Two Cobalt-Substituted Zincophosphate Molecular Sieves" in Synthesis of Porous Materials - Zeolites, Clays, and Nanostructures, 69 (1997):233-242,
https://hdl.handle.net/21.15107/rcub_technorep_6402 .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Ristić, Alenka
AU  - Tuel, Alain
AU  - Kaučič, Venčeslav
PY  - 1997
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6390
AB  - The fluoride route of synthesis of AIPO,-34 is also successful in the preparation of its cobalt modified product (CoAPO-34). The triclinic precursor of CoAPO-34 has been synthesized in the presence of HF and piperidine. Although two different Al sites are available for cobalt(ll) substitution (i.e., tetrahedral and octahedral sites), cobalt(ll) substitutes exclusively the tetrahedral aluminum. Calcination of the as-synthesized material results in oxidation of Cofll). This is evident from the electron absorption, electron paramagnetic resonance, and infrared measurements. The 
calcined product exhibits a particular sensitivity to humidity: upon hydration, the chabazite struc ture transforms to a new one. However, the hydration is a reversible process: thermal evacuation of the hydrated sample causes a complete return to the chabazite material. In comparison with the CoAPO-34 obtained in a nonfluoride medium, the CoAPO-34 prepared in this work exhibits a higher thermal stability.
PB  - Elsevier Science Inc.
T2  - Zeolites
T1  - A CoAPO-34 derived from a triclinic  precursor prepared in the presence of HF
EP  - 118
IS  - 2-3
SP  - 115
VL  - 18
DO  - 10.1016/S0144-2449(96)00132-7
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6390
ER  - 

@article{
author = "Rajić, Nevenka and Ristić, Alenka and Tuel, Alain and Kaučič, Venčeslav",
year = "1997",
abstract = "The fluoride route of synthesis of AIPO,-34 is also successful in the preparation of its cobalt modified product (CoAPO-34). The triclinic precursor of CoAPO-34 has been synthesized in the presence of HF and piperidine. Although two different Al sites are available for cobalt(ll) substitution (i.e., tetrahedral and octahedral sites), cobalt(ll) substitutes exclusively the tetrahedral aluminum. Calcination of the as-synthesized material results in oxidation of Cofll). This is evident from the electron absorption, electron paramagnetic resonance, and infrared measurements. The 
calcined product exhibits a particular sensitivity to humidity: upon hydration, the chabazite struc ture transforms to a new one. However, the hydration is a reversible process: thermal evacuation of the hydrated sample causes a complete return to the chabazite material. In comparison with the CoAPO-34 obtained in a nonfluoride medium, the CoAPO-34 prepared in this work exhibits a higher thermal stability.",
publisher = "Elsevier Science Inc.",
journal = "Zeolites",
title = "A CoAPO-34 derived from a triclinic  precursor prepared in the presence of HF",
pages = "118-115",
number = "2-3",
volume = "18",
doi = "10.1016/S0144-2449(96)00132-7",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6390"
}

Rajić, N., Ristić, A., Tuel, A.,& Kaučič, V.. (1997). A CoAPO-34 derived from a triclinic  precursor prepared in the presence of HF. in Zeolites
Elsevier Science Inc.., 18(2-3), 115-118.
https://doi.org/10.1016/S0144-2449(96)00132-7
https://hdl.handle.net/21.15107/rcub_technorep_6390

Rajić N, Ristić A, Tuel A, Kaučič V. A CoAPO-34 derived from a triclinic  precursor prepared in the presence of HF. in Zeolites. 1997;18(2-3):115-118.
doi:10.1016/S0144-2449(96)00132-7
https://hdl.handle.net/21.15107/rcub_technorep_6390 .

Rajić, Nevenka, Ristić, Alenka, Tuel, Alain, Kaučič, Venčeslav, "A CoAPO-34 derived from a triclinic  precursor prepared in the presence of HF" in Zeolites, 18, no. 2-3 (1997):115-118,
https://doi.org/10.1016/S0144-2449(96)00132-7 .,
https://hdl.handle.net/21.15107/rcub_technorep_6390 .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Gabrovšek, Roman
AU  - Kaučič, Venčeslav
PY  - 1996
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6389
AB  - The dehydration behavior of two synthetic, unsubstituted and cobalt-substituted, zincophos phates (one a sodalite analog and the other a new, hexagonal phase) was studied by TG/DTG and DSC. TG/DTG curves of the sodalite phases were very similar, exhibiting only one major weight loss that shifted to higher temperatures with increased amount of cobalt substitution. The profiles of the corresponding DSC curves, however, differed considerably among themselves. 
TG/DTG curves of hexagonal phases showed a more complex, multi-step dehydration behavior; the corresponding DSC curves also exhibited multiple endotherms. An explanation of these phenomena is given in terms of the specific arrangement of water molecules within a particular zincophosphate framework.
PB  - Elsevier
T2  - Thermochimica Acta
T1  - Dehydration behavior of some microporous zincophosphates
EP  - 164
IS  - 1-2
SP  - 157
VL  - 278
DO  - 10.1016/0040-6031(95)02692-4
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6389
ER  - 

@article{
author = "Rajić, Nevenka and Gabrovšek, Roman and Kaučič, Venčeslav",
year = "1996",
abstract = "The dehydration behavior of two synthetic, unsubstituted and cobalt-substituted, zincophos phates (one a sodalite analog and the other a new, hexagonal phase) was studied by TG/DTG and DSC. TG/DTG curves of the sodalite phases were very similar, exhibiting only one major weight loss that shifted to higher temperatures with increased amount of cobalt substitution. The profiles of the corresponding DSC curves, however, differed considerably among themselves. 
TG/DTG curves of hexagonal phases showed a more complex, multi-step dehydration behavior; the corresponding DSC curves also exhibited multiple endotherms. An explanation of these phenomena is given in terms of the specific arrangement of water molecules within a particular zincophosphate framework.",
publisher = "Elsevier",
journal = "Thermochimica Acta",
title = "Dehydration behavior of some microporous zincophosphates",
pages = "164-157",
number = "1-2",
volume = "278",
doi = "10.1016/0040-6031(95)02692-4",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6389"
}

Rajić, N., Gabrovšek, R.,& Kaučič, V.. (1996). Dehydration behavior of some microporous zincophosphates. in Thermochimica Acta
Elsevier., 278(1-2), 157-164.
https://doi.org/10.1016/0040-6031(95)02692-4
https://hdl.handle.net/21.15107/rcub_technorep_6389

Rajić N, Gabrovšek R, Kaučič V. Dehydration behavior of some microporous zincophosphates. in Thermochimica Acta. 1996;278(1-2):157-164.
doi:10.1016/0040-6031(95)02692-4
https://hdl.handle.net/21.15107/rcub_technorep_6389 .

Rajić, Nevenka, Gabrovšek, Roman, Kaučič, Venčeslav, "Dehydration behavior of some microporous zincophosphates" in Thermochimica Acta, 278, no. 1-2 (1996):157-164,
https://doi.org/10.1016/0040-6031(95)02692-4 .,
https://hdl.handle.net/21.15107/rcub_technorep_6389 .

TY  - JOUR
AU  - Zabukovec Logar, Nataša
AU  - Rajić, Nevenka
AU  - Kaučič, Venčeslav
AU  - Golič, Ljubo
PY  - 1995
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6397
AB  - A novel anionic cobalt-substituted zincophosphate framework with a hexagonal unit cell of composition Na6[Co0.2Zn0.8PO4]6·9H2O is synthesised and its crystal structure determined by single crystal X-ray diffraction.
PB  - Royal Society of Chemistry
T2  - Journal of the Chemical Society, Chemical Communications
T1  - A novel open-framework sodium zincophosphate with isomorphous cobalt(II) substitution
EP  - 1682
IS  - 16
SP  - 1681
DO  - 10.1039/C39950001681
ER  - 

@article{
author = "Zabukovec Logar, Nataša and Rajić, Nevenka and Kaučič, Venčeslav and Golič, Ljubo",
year = "1995",
abstract = "A novel anionic cobalt-substituted zincophosphate framework with a hexagonal unit cell of composition Na6[Co0.2Zn0.8PO4]6·9H2O is synthesised and its crystal structure determined by single crystal X-ray diffraction.",
publisher = "Royal Society of Chemistry",
journal = "Journal of the Chemical Society, Chemical Communications",
title = "A novel open-framework sodium zincophosphate with isomorphous cobalt(II) substitution",
pages = "1682-1681",
number = "16",
doi = "10.1039/C39950001681"
}

Zabukovec Logar, N., Rajić, N., Kaučič, V.,& Golič, L.. (1995). A novel open-framework sodium zincophosphate with isomorphous cobalt(II) substitution. in Journal of the Chemical Society, Chemical Communications
Royal Society of Chemistry.(16), 1681-1682.
https://doi.org/10.1039/C39950001681

Zabukovec Logar N, Rajić N, Kaučič V, Golič L. A novel open-framework sodium zincophosphate with isomorphous cobalt(II) substitution. in Journal of the Chemical Society, Chemical Communications. 1995;(16):1681-1682.
doi:10.1039/C39950001681 .

Zabukovec Logar, Nataša, Rajić, Nevenka, Kaučič, Venčeslav, Golič, Ljubo, "A novel open-framework sodium zincophosphate with isomorphous cobalt(II) substitution" in Journal of the Chemical Society, Chemical Communications, no. 16 (1995):1681-1682,
https://doi.org/10.1039/C39950001681 . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Zabukovec Logar, Nataša
AU  - Kaučič, Venčeslav
PY  - 1995
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6387
AB  - The crystallization of a reactive zincophosphate gel (which may contain Co(ll) component) in the presence of sodium cations at ambient temperature and pressure yielded products (abbreviated ZnPO-HEX or CoZnPO-HEX) with a novel anionic open framework topology. The Co(ll) ions isomorphously replace zinc(ll) in this zincophosphate lattice up to 30%. The hopeite phase appears as a precursor in the crystallization of these new products. The single crystal structure determination of CoZnPO-HEX reveals that the structure belongs to the hexagonal P61 space group with unit cell parameters a = 10.447(3) and c = 15.049(5) A. The structure consists of a three-dimensional tetrahedral framework containing one-dimensional six-ring channels. An in finite helix built up of sodium cations and water molecules has been found inside the channel. 
The helix plays an important structural role because a complete dehydration of the materials is the cause for the transformation of the hexagonal structure to an unknown crystalline phase.
PB  - Elsevier Science Inc.
T2  - Zeolites
T1  - A novel open framework zincophosphate:  Synthesis and characterization
EP  - 678
IS  - 8
SP  - 672
VL  - 15
DO  - 10.1016/0144-2449(95)00083-I
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6387
ER  - 

@article{
author = "Rajić, Nevenka and Zabukovec Logar, Nataša and Kaučič, Venčeslav",
year = "1995",
abstract = "The crystallization of a reactive zincophosphate gel (which may contain Co(ll) component) in the presence of sodium cations at ambient temperature and pressure yielded products (abbreviated ZnPO-HEX or CoZnPO-HEX) with a novel anionic open framework topology. The Co(ll) ions isomorphously replace zinc(ll) in this zincophosphate lattice up to 30%. The hopeite phase appears as a precursor in the crystallization of these new products. The single crystal structure determination of CoZnPO-HEX reveals that the structure belongs to the hexagonal P61 space group with unit cell parameters a = 10.447(3) and c = 15.049(5) A. The structure consists of a three-dimensional tetrahedral framework containing one-dimensional six-ring channels. An in finite helix built up of sodium cations and water molecules has been found inside the channel. 
The helix plays an important structural role because a complete dehydration of the materials is the cause for the transformation of the hexagonal structure to an unknown crystalline phase.",
publisher = "Elsevier Science Inc.",
journal = "Zeolites",
title = "A novel open framework zincophosphate:  Synthesis and characterization",
pages = "678-672",
number = "8",
volume = "15",
doi = "10.1016/0144-2449(95)00083-I",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6387"
}

Rajić, N., Zabukovec Logar, N.,& Kaučič, V.. (1995). A novel open framework zincophosphate:  Synthesis and characterization. in Zeolites
Elsevier Science Inc.., 15(8), 672-678.
https://doi.org/10.1016/0144-2449(95)00083-I
https://hdl.handle.net/21.15107/rcub_technorep_6387

Rajić N, Zabukovec Logar N, Kaučič V. A novel open framework zincophosphate:  Synthesis and characterization. in Zeolites. 1995;15(8):672-678.
doi:10.1016/0144-2449(95)00083-I
https://hdl.handle.net/21.15107/rcub_technorep_6387 .

Rajić, Nevenka, Zabukovec Logar, Nataša, Kaučič, Venčeslav, "A novel open framework zincophosphate:  Synthesis and characterization" in Zeolites, 15, no. 8 (1995):672-678,
https://doi.org/10.1016/0144-2449(95)00083-I .,
https://hdl.handle.net/21.15107/rcub_technorep_6387 .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Stojaković, Djordje
AU  - Hočevar, Stanko
AU  - Kaučič, Venčeslav
PY  - 1993
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5053
AB  - Hydrothermal synthesis of SAPO materials using isopropylamine (i-PrNH2) as the template leads to the formation of MnAPSO-34 if Mn(II) is present. In the presence of Cr(III), the synthesis yields SAPO-34 containing chromium(III), which is not incorporated in the silicoaluminophosphate lattice. Calcination of MnAPSO-34 results in oxidation of Mn(II); the calcinated product can be subsequently reduced back to MnAPSO-34. The MnAPSO-34 material catalyzes dehydration of methanol, and its catalytic activity is higher than that of SAPO-34.
PB  - Butterworth-Heinemann
T2  - ZEOLITES
T1  - On the possibility of incorporating Mn(II) and Cr(III) in SAPO-34 in the presence of isopropylamine as a template
EP  - 387
IS  - 5
SP  - 384
VL  - 13
DO  - 10.1016/0144-2449(93)90154-U
ER  - 

@article{
author = "Rajić, Nevenka and Stojaković, Djordje and Hočevar, Stanko and Kaučič, Venčeslav",
year = "1993",
abstract = "Hydrothermal synthesis of SAPO materials using isopropylamine (i-PrNH2) as the template leads to the formation of MnAPSO-34 if Mn(II) is present. In the presence of Cr(III), the synthesis yields SAPO-34 containing chromium(III), which is not incorporated in the silicoaluminophosphate lattice. Calcination of MnAPSO-34 results in oxidation of Mn(II); the calcinated product can be subsequently reduced back to MnAPSO-34. The MnAPSO-34 material catalyzes dehydration of methanol, and its catalytic activity is higher than that of SAPO-34.",
publisher = "Butterworth-Heinemann",
journal = "ZEOLITES",
title = "On the possibility of incorporating Mn(II) and Cr(III) in SAPO-34 in the presence of isopropylamine as a template",
pages = "387-384",
number = "5",
volume = "13",
doi = "10.1016/0144-2449(93)90154-U"
}

Rajić, N., Stojaković, D., Hočevar, S.,& Kaučič, V.. (1993). On the possibility of incorporating Mn(II) and Cr(III) in SAPO-34 in the presence of isopropylamine as a template. in ZEOLITES
Butterworth-Heinemann., 13(5), 384-387.
https://doi.org/10.1016/0144-2449(93)90154-U

Rajić N, Stojaković D, Hočevar S, Kaučič V. On the possibility of incorporating Mn(II) and Cr(III) in SAPO-34 in the presence of isopropylamine as a template. in ZEOLITES. 1993;13(5):384-387.
doi:10.1016/0144-2449(93)90154-U .

Rajić, Nevenka, Stojaković, Djordje, Hočevar, Stanko, Kaučič, Venčeslav, "On the possibility of incorporating Mn(II) and Cr(III) in SAPO-34 in the presence of isopropylamine as a template" in ZEOLITES, 13, no. 5 (1993):384-387,
https://doi.org/10.1016/0144-2449(93)90154-U . .

TY  - JOUR
AU  - Batista, Jurka
AU  - Kaučič, Venčeslav
AU  - Rajić, Nevenka
AU  - Stojaković, Djordje
PY  - 1992
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5054
AB  - Hydrothermal synthesis of CoAPSO-44 in the presence of cyclohexylamine (CHA) as the template is generally accompanied by the formation of an unknown phase, “Co(APSO)N.” Electronic spectroscopy indicates that CO(APSO)N contains Co2+ in a pentacoordinated environment. When Co(APSO)N is heated at 195°C in a water suspension under autogenic pressure, two processes occur: (a) a partial conversion of Co(APSO)N into CoAPSO-44 and (b) decomposition of Co(APSO)N into Co- and Al-phosphates. Thermal removal of CHA from Co(APSO)N results in a breakdown of the latter's cyrstal lattice.
PB  - Butterworth-Heinemann
T2  - ZEOLITES
T1  - On the formation of CoAPSO-44
EP  - 928
IS  - 8
SP  - 925
VL  - 12
DO  - 10.1016/0144-2449(92)90156-J
ER  - 

@article{
author = "Batista, Jurka and Kaučič, Venčeslav and Rajić, Nevenka and Stojaković, Djordje",
year = "1992",
abstract = "Hydrothermal synthesis of CoAPSO-44 in the presence of cyclohexylamine (CHA) as the template is generally accompanied by the formation of an unknown phase, “Co(APSO)N.” Electronic spectroscopy indicates that CO(APSO)N contains Co2+ in a pentacoordinated environment. When Co(APSO)N is heated at 195°C in a water suspension under autogenic pressure, two processes occur: (a) a partial conversion of Co(APSO)N into CoAPSO-44 and (b) decomposition of Co(APSO)N into Co- and Al-phosphates. Thermal removal of CHA from Co(APSO)N results in a breakdown of the latter's cyrstal lattice.",
publisher = "Butterworth-Heinemann",
journal = "ZEOLITES",
title = "On the formation of CoAPSO-44",
pages = "928-925",
number = "8",
volume = "12",
doi = "10.1016/0144-2449(92)90156-J"
}

Batista, J., Kaučič, V., Rajić, N.,& Stojaković, D.. (1992). On the formation of CoAPSO-44. in ZEOLITES
Butterworth-Heinemann., 12(8), 925-928.
https://doi.org/10.1016/0144-2449(92)90156-J

Batista J, Kaučič V, Rajić N, Stojaković D. On the formation of CoAPSO-44. in ZEOLITES. 1992;12(8):925-928.
doi:10.1016/0144-2449(92)90156-J .

Batista, Jurka, Kaučič, Venčeslav, Rajić, Nevenka, Stojaković, Djordje, "On the formation of CoAPSO-44" in ZEOLITES, 12, no. 8 (1992):925-928,
https://doi.org/10.1016/0144-2449(92)90156-J . .

TY  - JOUR
AU  - Cheetham, G.M.T.
AU  - Harding, M.M.
AU  - Rizkallah, P.J.
AU  - Kaučič, Venčeslav
AU  - Rajić, Nevenka
PY  - 1991
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5055
AB  - Co0.12A15.88P6024(OH)2.C2HIoN2.2H2 O, Mr
= 867"7, monoclinic, P2~/n, a = 8.992 (3), b =
17-760~i c=8.359(4) A, fl=105.39(4) ° , U =
1287.0 Z = 2, Dx = 2.24 g cm -3, a = 0.895 (5) A,
/.~ = 14.7 cm-1 F(000) = 871.4, R = 0.061 for 1163
observed reflections, recorded with an area-detector
diffractometer. The framework structure is similar to
that of A1PO4-21 [Parise & Day (1985). Acta Cryst.
C41, 515-520], with 4-, 5- and 6-coordinate aluminium atoms; Co 2+ replaces tetrahedral A13÷ ions, and
the 6-coordinate A13÷ has one water molecule as
ligand (in addition to 5 framework O atoms). In the
channels, the C and N atoms of the ethylenediamine
molecule were located; the molecules are disordered,
and occupy two mutually exclusive positions related
by an inversion centre.
PB  - IUCr/Wiley
T2  - Acta Crystallographica Section C
T1  - CoAPO-21, a cobalt-doped aluminophosphate related to AlPO4-21
EP  - 1364
SP  - 1361
VL  - 47
DO  - 10.1107/S0108270191000744
ER  - 

@article{
author = "Cheetham, G.M.T. and Harding, M.M. and Rizkallah, P.J. and Kaučič, Venčeslav and Rajić, Nevenka",
year = "1991",
abstract = "Co0.12A15.88P6024(OH)2.C2HIoN2.2H2 O, Mr
= 867"7, monoclinic, P2~/n, a = 8.992 (3), b =
17-760~i c=8.359(4) A, fl=105.39(4) ° , U =
1287.0 Z = 2, Dx = 2.24 g cm -3, a = 0.895 (5) A,
/.~ = 14.7 cm-1 F(000) = 871.4, R = 0.061 for 1163
observed reflections, recorded with an area-detector
diffractometer. The framework structure is similar to
that of A1PO4-21 [Parise & Day (1985). Acta Cryst.
C41, 515-520], with 4-, 5- and 6-coordinate aluminium atoms; Co 2+ replaces tetrahedral A13÷ ions, and
the 6-coordinate A13÷ has one water molecule as
ligand (in addition to 5 framework O atoms). In the
channels, the C and N atoms of the ethylenediamine
molecule were located; the molecules are disordered,
and occupy two mutually exclusive positions related
by an inversion centre.",
publisher = "IUCr/Wiley",
journal = "Acta Crystallographica Section C",
title = "CoAPO-21, a cobalt-doped aluminophosphate related to AlPO4-21",
pages = "1364-1361",
volume = "47",
doi = "10.1107/S0108270191000744"
}

Cheetham, G.M.T., Harding, M.M., Rizkallah, P.J., Kaučič, V.,& Rajić, N.. (1991). CoAPO-21, a cobalt-doped aluminophosphate related to AlPO4-21. in Acta Crystallographica Section C
IUCr/Wiley., 47, 1361-1364.
https://doi.org/10.1107/S0108270191000744

Cheetham G, Harding M, Rizkallah P, Kaučič V, Rajić N. CoAPO-21, a cobalt-doped aluminophosphate related to AlPO4-21. in Acta Crystallographica Section C. 1991;47:1361-1364.
doi:10.1107/S0108270191000744 .

Cheetham, G.M.T., Harding, M.M., Rizkallah, P.J., Kaučič, Venčeslav, Rajić, Nevenka, "CoAPO-21, a cobalt-doped aluminophosphate related to AlPO4-21" in Acta Crystallographica Section C, 47 (1991):1361-1364,
https://doi.org/10.1107/S0108270191000744 . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Stojaković, Djordje
AU  - Kaučič, Venčeslav
PY  - 1991
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5062
AB  - Nickel(ll)-substituted aluminophosphates of structure types 21 and 12 (NiAPO-21 and NiAPO-12) have been prepared hydrothermally in the presence of ethylenediamine as the template. U.v.-visible spectroscopy of NiAPO-21 suggests that Ni(ll) replaces hexacoordinated aluminum of the AIP04-21 framework and is octahedrally coordinated by the 0 atoms of the aluminophosphate skeleton and also by H20 and en molecules. It has also been found that in the presence of copper no aluminophosphate-type products can be obtained.
PB  - Butterworth-Heinemann
T2  - Zeolites
T1  - Preparation of aluminophosphate  molecular sieves in the presence of  nickel( II) and copper( II)
EP  - 616
IS  - 6
SP  - 612
VL  - 11
DO  - 10.1016/S0144-2449(05)80013-2
ER  - 

@article{
author = "Rajić, Nevenka and Stojaković, Djordje and Kaučič, Venčeslav",
year = "1991",
abstract = "Nickel(ll)-substituted aluminophosphates of structure types 21 and 12 (NiAPO-21 and NiAPO-12) have been prepared hydrothermally in the presence of ethylenediamine as the template. U.v.-visible spectroscopy of NiAPO-21 suggests that Ni(ll) replaces hexacoordinated aluminum of the AIP04-21 framework and is octahedrally coordinated by the 0 atoms of the aluminophosphate skeleton and also by H20 and en molecules. It has also been found that in the presence of copper no aluminophosphate-type products can be obtained.",
publisher = "Butterworth-Heinemann",
journal = "Zeolites",
title = "Preparation of aluminophosphate  molecular sieves in the presence of  nickel( II) and copper( II)",
pages = "616-612",
number = "6",
volume = "11",
doi = "10.1016/S0144-2449(05)80013-2"
}

Rajić, N., Stojaković, D.,& Kaučič, V.. (1991). Preparation of aluminophosphate  molecular sieves in the presence of  nickel( II) and copper( II). in Zeolites
Butterworth-Heinemann., 11(6), 612-616.
https://doi.org/10.1016/S0144-2449(05)80013-2

Rajić N, Stojaković D, Kaučič V. Preparation of aluminophosphate  molecular sieves in the presence of  nickel( II) and copper( II). in Zeolites. 1991;11(6):612-616.
doi:10.1016/S0144-2449(05)80013-2 .

Rajić, Nevenka, Stojaković, Djordje, Kaučič, Venčeslav, "Preparation of aluminophosphate  molecular sieves in the presence of  nickel( II) and copper( II)" in Zeolites, 11, no. 6 (1991):612-616,
https://doi.org/10.1016/S0144-2449(05)80013-2 . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Stojaković, Djordje
AU  - Kaučič, Venčeslav
PY  - 1991
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5056
AB  - The SAPO, MeAPO and MeSAPO microporous materials (Me=Co2+ and/or 2n2+) having a sodalite structure have been obtained hydrothermally at 200°C in the presence of tetramethylammonium ion as the template. The SAPO and MeSAPO products prepared at lower template concentrations are formed through a partial replacement of both aluminium and phosphorus by silicon in the parent aluminophosphate lattice; at higher pH only phosphorus is replaced. While the Me2+ ions are in all cases constituents of the framework, most zinc-containing materials have a fraction of the Zn2+ ions located in the cavities. T.g.a . shows that complete removal of the trapped organic component can not be easily accomplished. This can be explained by the small size of the openings in the sodalite cages. Powder diffraction analysis shows that replacement of aluminium by silicon, cobalt and zinc, and phosphorus by silicon leads to an expansion of the parent aluminophosphate unit cell. Kinetic studies suggest that crystallization of the silicon-containing products is preceded by an induction period of about 2 h, the nucleation taking place both in the liquid and solid phase.
PB  - CSIRO PUBLISHING
T2  - Australian Journal of Chemistry
T1  - Preparation and Properties of Sodalite-Type Aluminophosphates Containing Silicon, Cobalt and Zinc
EP  - 553
IS  - 4
SP  - 543
VL  - 44
DO  - 10.1071/CH9910543
ER  - 

@article{
author = "Rajić, Nevenka and Stojaković, Djordje and Kaučič, Venčeslav",
year = "1991",
abstract = "The SAPO, MeAPO and MeSAPO microporous materials (Me=Co2+ and/or 2n2+) having a sodalite structure have been obtained hydrothermally at 200°C in the presence of tetramethylammonium ion as the template. The SAPO and MeSAPO products prepared at lower template concentrations are formed through a partial replacement of both aluminium and phosphorus by silicon in the parent aluminophosphate lattice; at higher pH only phosphorus is replaced. While the Me2+ ions are in all cases constituents of the framework, most zinc-containing materials have a fraction of the Zn2+ ions located in the cavities. T.g.a . shows that complete removal of the trapped organic component can not be easily accomplished. This can be explained by the small size of the openings in the sodalite cages. Powder diffraction analysis shows that replacement of aluminium by silicon, cobalt and zinc, and phosphorus by silicon leads to an expansion of the parent aluminophosphate unit cell. Kinetic studies suggest that crystallization of the silicon-containing products is preceded by an induction period of about 2 h, the nucleation taking place both in the liquid and solid phase.",
publisher = "CSIRO PUBLISHING",
journal = "Australian Journal of Chemistry",
title = "Preparation and Properties of Sodalite-Type Aluminophosphates Containing Silicon, Cobalt and Zinc",
pages = "553-543",
number = "4",
volume = "44",
doi = "10.1071/CH9910543"
}

Rajić, N., Stojaković, D.,& Kaučič, V.. (1991). Preparation and Properties of Sodalite-Type Aluminophosphates Containing Silicon, Cobalt and Zinc. in Australian Journal of Chemistry
CSIRO PUBLISHING., 44(4), 543-553.
https://doi.org/10.1071/CH9910543

Rajić N, Stojaković D, Kaučič V. Preparation and Properties of Sodalite-Type Aluminophosphates Containing Silicon, Cobalt and Zinc. in Australian Journal of Chemistry. 1991;44(4):543-553.
doi:10.1071/CH9910543 .

Rajić, Nevenka, Stojaković, Djordje, Kaučič, Venčeslav, "Preparation and Properties of Sodalite-Type Aluminophosphates Containing Silicon, Cobalt and Zinc" in Australian Journal of Chemistry, 44, no. 4 (1991):543-553,
https://doi.org/10.1071/CH9910543 . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Stojaković, Djordje
AU  - Kaučič, Venčeslav
PY  - 1990
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5060
AB  - Two materials, AIPO4-15 and CoAPO-15, with the same aluminophosphate lattice have been obtained by hydrothermal synthesis in the presence of hexamethylenetetramine (HMTA). Their formation is attributed to the influence of species that arise through the decomposition of HMTA, the latter process taking place under synthetic conditions. The Co 2+ ion in CoAPO-15 occupies tetragonally deformed octahedral sites, and this causes a slight expansion of the unit cell of CoAPO-15 in comparison to that of AIPO4-15. The Co 2+ ion is coordinated not only by the O atoms of the system but also by NH3 molecules.
PB  - Butterworth-Heinemann
T2  - Zeolites
T1  - Formation of AlPO4-15 and CoAPO-15 in the presence of hexamethylenetetramine
EP  - 805
IS  - 8
SP  - 802
VL  - 10
DO  - https://doi.org/10.1016/0144-2449(90)90066-Z
ER  - 

@article{
author = "Rajić, Nevenka and Stojaković, Djordje and Kaučič, Venčeslav",
year = "1990",
abstract = "Two materials, AIPO4-15 and CoAPO-15, with the same aluminophosphate lattice have been obtained by hydrothermal synthesis in the presence of hexamethylenetetramine (HMTA). Their formation is attributed to the influence of species that arise through the decomposition of HMTA, the latter process taking place under synthetic conditions. The Co 2+ ion in CoAPO-15 occupies tetragonally deformed octahedral sites, and this causes a slight expansion of the unit cell of CoAPO-15 in comparison to that of AIPO4-15. The Co 2+ ion is coordinated not only by the O atoms of the system but also by NH3 molecules.",
publisher = "Butterworth-Heinemann",
journal = "Zeolites",
title = "Formation of AlPO4-15 and CoAPO-15 in the presence of hexamethylenetetramine",
pages = "805-802",
number = "8",
volume = "10",
doi = "https://doi.org/10.1016/0144-2449(90)90066-Z"
}

Rajić, N., Stojaković, D.,& Kaučič, V.. (1990). Formation of AlPO4-15 and CoAPO-15 in the presence of hexamethylenetetramine. in Zeolites
Butterworth-Heinemann., 10(8), 802-805.
https://doi.org/https://doi.org/10.1016/0144-2449(90)90066-Z

Rajić N, Stojaković D, Kaučič V. Formation of AlPO4-15 and CoAPO-15 in the presence of hexamethylenetetramine. in Zeolites. 1990;10(8):802-805.
doi:https://doi.org/10.1016/0144-2449(90)90066-Z .

Rajić, Nevenka, Stojaković, Djordje, Kaučič, Venčeslav, "Formation of AlPO4-15 and CoAPO-15 in the presence of hexamethylenetetramine" in Zeolites, 10, no. 8 (1990):802-805,
https://doi.org/https://doi.org/10.1016/0144-2449(90)90066-Z . .