Magnetic Resonance in Chemistry
Vol: 44, Issue: 8, August 2006
pp. 770 - 775
Title: Toward a better description of gallo-phosphate materials in solid-state NMR: 1D and 2D correlation studies
Authors: Montouillout, Valériea; Morais, Cláudia M.a; Douy, Andréa; Fayon, Francka; Massiot, Dominiquea
Affiliations: a. CRMHT—CNRS UPR4212 1D, Avenue de la Recherche Scientifique, 45071 Orléans Cedex 2, France
Keywords: NMR; 71Ga; 31P; HMQC experiment; gallo-phosphates
We show that weak 2J(71Ga—O—31P), typically 12 Hz in GaPO4, can be used to efficiently establish heteronuclear 31P—71Ga correlation using a MAS HMQC experiment in gallo-phosphate materials. The experiment demonstrated for cristobalite GaPO4 is then applied to Ga(PO3)3, where it allows the differentiation of the signature of three different Ga sites overlapping in the 1D spectrum. Copyright © 2006 John Wiley & Sons, Ltd.