Rietveld refinement of a chabazite-like aluminophosphate containing a [Ni(1,2-diaminoethane)(2)O-2](2-) complex bridge
Abstract
The crystal structure of a novel Ni-containing precursor to the molecular sieve AlPO4-34 (CHA framework type) has been determined in its as-synthesized form using high-resolution synchrotron powder diffraction data. One [Ni(1,2-diaminoethane)(2)O-2](2-) complex is found per chabazite-like cage in the triclinic unit cell Of C4H18N4NiAl6P6O26 (a = 9.0854(9) Angstrom, b = 9.3327(3) Angstrom, c = 8,936(1) Angstrom, alpha = 86.27(6)degrees, beta = 101.26(6)degrees, gamma = 92.72(5)degrees, P (1) over bar). Although the connectivity of the aluminophosphate framework is related to that of AlPO4-34, it is not identical because some P-O-Al bridges are broken. The Al atoms associated with this disruption of the connectivity form double Al-O-Al bridges and are five-coordinate, while the P atoms interact strongly with the Ni(II) complex ion to form an unusual P-O-Ni-O-P bridge across the chabazite cage. The triclinic deformation associated with these structural features disappears upon calcination..., when the Ni(II) complex decomposes and the fully connected CHA framework type forms.
Keywords:
AlPO4-34 precursors / CHA framework type / Ni(II) complex / synchrotron powder diffraction / Rietveld refinementSource:
Microporous and Mesoporous Materials, 2001, 47, 2-3, 269-274Publisher:
- Elsevier, Amsterdam
DOI: 10.1016/S1387-1811(01)00386-9
ISSN: 1387-1811
WoS: 000171341700014
Scopus: 2-s2.0-0035477849
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Meden, A AU - McCusker, LB AU - Baerlocher, C AU - Rajić, Nevenka AU - Kaučič, Venčeslav PY - 2001 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/380 AB - The crystal structure of a novel Ni-containing precursor to the molecular sieve AlPO4-34 (CHA framework type) has been determined in its as-synthesized form using high-resolution synchrotron powder diffraction data. One [Ni(1,2-diaminoethane)(2)O-2](2-) complex is found per chabazite-like cage in the triclinic unit cell Of C4H18N4NiAl6P6O26 (a = 9.0854(9) Angstrom, b = 9.3327(3) Angstrom, c = 8,936(1) Angstrom, alpha = 86.27(6)degrees, beta = 101.26(6)degrees, gamma = 92.72(5)degrees, P (1) over bar). Although the connectivity of the aluminophosphate framework is related to that of AlPO4-34, it is not identical because some P-O-Al bridges are broken. The Al atoms associated with this disruption of the connectivity form double Al-O-Al bridges and are five-coordinate, while the P atoms interact strongly with the Ni(II) complex ion to form an unusual P-O-Ni-O-P bridge across the chabazite cage. The triclinic deformation associated with these structural features disappears upon calcination, when the Ni(II) complex decomposes and the fully connected CHA framework type forms. PB - Elsevier, Amsterdam T2 - Microporous and Mesoporous Materials T1 - Rietveld refinement of a chabazite-like aluminophosphate containing a [Ni(1,2-diaminoethane)(2)O-2](2-) complex bridge EP - 274 IS - 2-3 SP - 269 VL - 47 DO - 10.1016/S1387-1811(01)00386-9 ER -
@article{ author = "Meden, A and McCusker, LB and Baerlocher, C and Rajić, Nevenka and Kaučič, Venčeslav", year = "2001", abstract = "The crystal structure of a novel Ni-containing precursor to the molecular sieve AlPO4-34 (CHA framework type) has been determined in its as-synthesized form using high-resolution synchrotron powder diffraction data. One [Ni(1,2-diaminoethane)(2)O-2](2-) complex is found per chabazite-like cage in the triclinic unit cell Of C4H18N4NiAl6P6O26 (a = 9.0854(9) Angstrom, b = 9.3327(3) Angstrom, c = 8,936(1) Angstrom, alpha = 86.27(6)degrees, beta = 101.26(6)degrees, gamma = 92.72(5)degrees, P (1) over bar). Although the connectivity of the aluminophosphate framework is related to that of AlPO4-34, it is not identical because some P-O-Al bridges are broken. The Al atoms associated with this disruption of the connectivity form double Al-O-Al bridges and are five-coordinate, while the P atoms interact strongly with the Ni(II) complex ion to form an unusual P-O-Ni-O-P bridge across the chabazite cage. The triclinic deformation associated with these structural features disappears upon calcination, when the Ni(II) complex decomposes and the fully connected CHA framework type forms.", publisher = "Elsevier, Amsterdam", journal = "Microporous and Mesoporous Materials", title = "Rietveld refinement of a chabazite-like aluminophosphate containing a [Ni(1,2-diaminoethane)(2)O-2](2-) complex bridge", pages = "274-269", number = "2-3", volume = "47", doi = "10.1016/S1387-1811(01)00386-9" }
Meden, A., McCusker, L., Baerlocher, C., Rajić, N.,& Kaučič, V.. (2001). Rietveld refinement of a chabazite-like aluminophosphate containing a [Ni(1,2-diaminoethane)(2)O-2](2-) complex bridge. in Microporous and Mesoporous Materials Elsevier, Amsterdam., 47(2-3), 269-274. https://doi.org/10.1016/S1387-1811(01)00386-9
Meden A, McCusker L, Baerlocher C, Rajić N, Kaučič V. Rietveld refinement of a chabazite-like aluminophosphate containing a [Ni(1,2-diaminoethane)(2)O-2](2-) complex bridge. in Microporous and Mesoporous Materials. 2001;47(2-3):269-274. doi:10.1016/S1387-1811(01)00386-9 .
Meden, A, McCusker, LB, Baerlocher, C, Rajić, Nevenka, Kaučič, Venčeslav, "Rietveld refinement of a chabazite-like aluminophosphate containing a [Ni(1,2-diaminoethane)(2)O-2](2-) complex bridge" in Microporous and Mesoporous Materials, 47, no. 2-3 (2001):269-274, https://doi.org/10.1016/S1387-1811(01)00386-9 . .