Highly luminescent imidoylamidinato platinum(II) complexes formed by the coupling of 1H-pyrazole-1-carboxamidine with nitriles used as reaction solvents

A series of imidoylamidinato Pt(II) complexes have been prepared by the reaction of [Pt(bpy)(RCN)2]2+ (R = Me, Et, Ph) generated in a nitrile solution with 1H-pyrazole-1-carboxamidine. These complexes exhibit bright yellow or yellow-green luminescence in the solid state and mechanochromic behavior.