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Multinuclear high‐resolution solid‐state magnetic resonance studies of some platinum(II) complexes with phosphorus‐containing ligands

Cross‐polarization, magic‐angle spinning NMR experiments have been carried out for nine square‐planar platinum(II) complexes, each with two substituted phosphine ligands. 13C and 13P (and, in some cases, 195Pt) nuclei were observed. The results reveal crystallographic non‐equivalence which, in one instance, is confirmed by subsequent X‐ray studies. Chemical shifts and coupling constants—(Pt,P), (Pt,C), (P,C) and, for one compound, (Sn,P)—are reported and discussed. Shielding tensor data are also presented.