Structure and Luminescent Property of a Tetrahedral Silver(Ⅰ) Cluster Complex Based on Phosphor and Sulphur Mixed-ligand System

摘要

A tetrahedral silver(Ⅰ) cluster complex {Ag4[HC(PPh2)3](S2PPh2)3}ClO4 (1,HC(PPh2)3 =1,1,1-tris(triphenylphosphino)methane,S2PPh2 =diphenyldithiophosphinate) was synthesized by assembling silver ion with phosphor and sulphur mixed-ligand system.The complex was characterized by single-crystal X-ray crystallography,high-resolution mass spectroscopy and thermal analysis.In the crystal structure,an inverted tetrahedron was constructed from Ag4 metal skeleton.The Ag4 cage was stabilized by three diphenyldithiophosphinate ligands and one 1,1,1-tris(triphenylphosphino)methane ligand.1 exhibits luminescent properties in solid state.A bright yellow-green emission centered at 533 nm has been observed in solid state.Large Stokes' shifts with long range of emissive lifetime indicate that the emission likely originates from a triplet state parentage.