A 2D ³¹P MAS NMR Study of Polycrystalline Cd₃(PO₄)₂

Abstract

It is demonstrated on a polycrystalline powder sample of Cd 3 (PO 4 ) 2, given a known single-crystal X-ray structure, that two-dimensional 31 P double-quantum single-quantum MAS correlation experiments allow unique assignment of multiple 31 P resonances to specific P sites in the structure of such inorganic orthophosphates. The eigenvalues of the 31 P and 113 Cd shielding tensors of Cd 3 (PO 4 ) 2 are reported, the determination of which requires usage of a 2D MAS spinning sideband separation experiment.