31P MAS-NMR Study of Some Alkali Rare-Earth Cyclo- and Polyphosphates-Reference-Cited by-同舟云学术

31P MAS-NMR Study of Some Alkali Rare-Earth Cyclo- and Polyphosphates

Published:2000-10 Issue:10 Volume:54 Page:1528-1533
ISSN:0003-7028
Container-title:Applied Spectroscopy
language:en
Short-container-title:Appl Spectrosc

Author:

Moussa S. Ben¹,Iglesias J. E.¹,Trabelsi-Ayedi M.¹,Ferid M.¹,Sanz J.¹

Affiliation:

1. Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain (S.B.M., J.E.I., J.S.); Centre de Chimie Appliquée, Institut National de la Recherche Scientifique et Technique BP 95, Hammam-Lif 2050, Tunisia (M.F.); and Département de Chimie, Institut Supérieur de l'Education et de la Formation Continue, 43 rue de la Liberté, 2019 Le Bardo, Tunisia (M.T.-A.)

Abstract

Several alkali rare-earth polyphosphates have been analyzed by high-resolution 31P MAS-NMR (magic angle spinning nuclear magnetic resonance) spectroscopy. From their NMR spectra, the number and the multiplicity of crystallographic sites have been analyzed in the NH4LaP4O12 cyclophosphate and in MI2La(PO3)5 (M = NH4, K) and MILnIII(PO3)4 (M = Li, Na, Ag, K, Rb, Cs, Tl; Ln = La, Sm), long-chain polyphosphates. A linear dependence of NMR isotropic chemical shift values on the mean POP angles of the chain, calculated from data published on isostructural compounds, has been deduced. Chemical shift anisotropies of NMR components have been analyzed in terms of the structural characteristics of the environment of P atoms.

Publisher

SAGE Publications

Subject

Spectroscopy,Instrumentation

Link

http://journals.sagepub.com/doi/pdf/10.1366/0003702001948457

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