Abstract
1 H–{195Pt} heteronuclear double resonance experiments are shown to be valuable for the identification of species present in mixtures of platinum(II) complexes. The 195Pt chemical shifts can be understood in terms of variations in electronic excitation energies when the size of the ligands remains approximately constant, but bulky ligand atoms produce large shifts to high field which then dominate. Coupling constants involving 195Pt are also discussed.

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