High field magic-angle spinning (MAS) 31 P-NMR investigations of novel porous zincophosphates and their cobalt-containing derivatives confirm the framework structure of alternating Zn(Co)O 4 and PO 4 tetrahedra. The MAS NMR spectrum of cobalt-containing products exhibits a large anisotropy manifested in numerous side bands. This effect is attributed to paramagnetic shifts induced by dipolar interactions between the unpaired electrons of Co 2+ and the 31 P nuclei. The relative intensity of the side bands is significantly lower in the cobalt-exchanged sample (where the Co 2+ does not occupy framework sites) than in the cobalt-containing zincophosphates. This shows that 31 P-NMR measurements can give direct evidence of extra-framework cobalt(II) or of Co(II) incorporation in the zincophosphate lattice.
TY - JOUR
AU - Rajić, Nevenka
AU - Stojaković, O.
PY - 1996
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/71
AB - High field magic-angle spinning (MAS) 31 P-NMR investigations of novel porous zincophosphates and their cobalt-containing derivatives confirm the framework structure of alternating Zn(Co)O 4 and PO 4 tetrahedra. The MAS NMR spectrum of cobalt-containing products exhibits a large anisotropy manifested in numerous side bands. This effect is attributed to paramagnetic shifts induced by dipolar interactions between the unpaired electrons of Co 2+ and the 31 P nuclei. The relative intensity of the side bands is significantly lower in the cobalt-exchanged sample (where the Co 2+ does not occupy framework sites) than in the cobalt-containing zincophosphates. This shows that 31 P-NMR measurements can give direct evidence of extra-framework cobalt(II) or of Co(II) incorporation in the zincophosphate lattice.
PB - Serbian Chemical Society, Belgrade
T2 - Journal of the Serbian Chemical Society
T1 - 31 P MAS NMR investigation of some microporous zincophosphates
EP - 111
IS - 2
SP - 107
VL - 61
UR - https://hdl.handle.net/21.15107/rcub_technorep_71
ER -
@article{
author = "Rajić, Nevenka and Stojaković, O.",
year = "1996",
abstract = "High field magic-angle spinning (MAS) 31 P-NMR investigations of novel porous zincophosphates and their cobalt-containing derivatives confirm the framework structure of alternating Zn(Co)O 4 and PO 4 tetrahedra. The MAS NMR spectrum of cobalt-containing products exhibits a large anisotropy manifested in numerous side bands. This effect is attributed to paramagnetic shifts induced by dipolar interactions between the unpaired electrons of Co 2+ and the 31 P nuclei. The relative intensity of the side bands is significantly lower in the cobalt-exchanged sample (where the Co 2+ does not occupy framework sites) than in the cobalt-containing zincophosphates. This shows that 31 P-NMR measurements can give direct evidence of extra-framework cobalt(II) or of Co(II) incorporation in the zincophosphate lattice.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "31 P MAS NMR investigation of some microporous zincophosphates",
pages = "111-107",
number = "2",
volume = "61",
url = "https://hdl.handle.net/21.15107/rcub_technorep_71"
}
Rajić, N.,& Stojaković, O.. (1996). 31 P MAS NMR investigation of some microporous zincophosphates. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 61(2), 107-111.
https://hdl.handle.net/21.15107/rcub_technorep_71
Rajić N, Stojaković O. 31 P MAS NMR investigation of some microporous zincophosphates. in Journal of the Serbian Chemical Society. 1996;61(2):107-111.
https://hdl.handle.net/21.15107/rcub_technorep_71 .
Rajić, Nevenka, Stojaković, O., "31 P MAS NMR investigation of some microporous zincophosphates" in Journal of the Serbian Chemical Society, 61, no. 2 (1996):107-111,
https://hdl.handle.net/21.15107/rcub_technorep_71 .
