Towards better description of gallo-phosphate materials in solid state NMR: 1D and 2D correlation studies

V. Montouillout (1) , C. M. Morais (1, 2) , A. Douy (1) , F. Fayon (1) , D. Massiot (1)

1 CRMHT - Centre de recherches sur les matériaux à haute température
2 IREM - Institut de réactivité, électrochimie et microporosite

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.

Mots clés: NMR; 71Ga; 31P; HMQC experiment; gallo-phosphates.; gallo-phosphates

Domaines: Matériaux

V. Montouillout, C. M. Morais, A. Douy, F. Fayon, D. Massiot. Towards better description of gallo-phosphate materials in solid state NMR: 1D and 2D correlation studies. Magnetic Resonance in Chemistry, 2006, 8, pp.770-775. ⟨10.1002/mrc.1846⟩. ⟨hal-00022198⟩