Nb-93 and O-17 NMR chemical shifts of ...
Document type :
Article dans une revue scientifique: Article original
PMID :
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Title :
Nb-93 and O-17 NMR chemical shifts of niobiophosphate compounds
Author(s) :
Flambard, A. [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Montagne, Lionel [Auteur]
3209|||Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS] (VALID)
Delevoye, Laurent [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Steuernagel, S. [Auteur]
Bruker BioSpin MRI GmbH [Ettlingen, Germany]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Montagne, Lionel [Auteur]

3209|||Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS] (VALID)
Delevoye, Laurent [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Steuernagel, S. [Auteur]
Bruker BioSpin MRI GmbH [Ettlingen, Germany]
Journal title :
Solid State Nuclear Magnetic Resonance
Abbreviated title :
Solid State Nucl. Magn. Reson.
Volume number :
32
Pages :
34-43
Publication date :
2007-10
ISSN :
0926-2040
English keyword(s) :
niobiophosphate
niobate
phosphate
O-17 NMR
Nb-93 NMR
niobate
phosphate
O-17 NMR
Nb-93 NMR
HAL domain(s) :
Chimie
English abstract : [en]
Niobiophosphate compounds with a large range of niobium and oxygen environments were studied with 93Nb and 17O solid-state NMR. 93Nb isotropic chemical shift of pure niobate Nb(ONb)6, pure phosphate Nb(OP)6 and mixed ...
Show more >Niobiophosphate compounds with a large range of niobium and oxygen environments were studied with 93Nb and 17O solid-state NMR. 93Nb isotropic chemical shift of pure niobate Nb(ONb)6, pure phosphate Nb(OP)6 and mixed phosphate–niobate Nb(OP)x(ONb)(6−x) (1⩽x⩽5) sites were measured at a high magnetic field (18.8 T). 93Nb chemical shifts were found to be sensitive to the variation of local charge on Nb, but not to the local bond geometry (i.e. crystallographic site and edge or corner connectivity). A systematic shift to high field of the 93Nb chemical shift is measured when x increases. Then, 17O NMR spectra of a series of enriched samples provided the chemical shift and quadrupolar parameters for 4 types of oxygen environment (P–O–P, P–O–Na, P–O–Nb and Nb–O–Nb). Finally, Nb–O–Nb sites were characterized by a large 17O chemical shift anisotropy.Show less >
Show more >Niobiophosphate compounds with a large range of niobium and oxygen environments were studied with 93Nb and 17O solid-state NMR. 93Nb isotropic chemical shift of pure niobate Nb(ONb)6, pure phosphate Nb(OP)6 and mixed phosphate–niobate Nb(OP)x(ONb)(6−x) (1⩽x⩽5) sites were measured at a high magnetic field (18.8 T). 93Nb chemical shifts were found to be sensitive to the variation of local charge on Nb, but not to the local bond geometry (i.e. crystallographic site and edge or corner connectivity). A systematic shift to high field of the 93Nb chemical shift is measured when x increases. Then, 17O NMR spectra of a series of enriched samples provided the chemical shift and quadrupolar parameters for 4 types of oxygen environment (P–O–P, P–O–Na, P–O–Nb and Nb–O–Nb). Finally, Nb–O–Nb sites were characterized by a large 17O chemical shift anisotropy.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois
CNRS
Centrale Lille
ENSCL
Univ. Artois
Collections :
Research team(s) :
RMN et matériaux inorganiques (RM2I)
Submission date :
2023-05-30T18:18:20Z
2024-04-24T09:39:05Z
2024-04-24T09:39:05Z