Syntheses and Solid-state Luminescence Properties of Binuclear Copper (Ⅰ) Complexes

Two binuclear cuprous complexes (PPh₃)₂Cu(μ-X)₂Cu(PPh₃) (X = Br (1); Cl (2)), are synthesized and characterized by single-crystal X-ray diffraction for 1. It is demonstrated that complexes 1 and 2 exhibit strong green solid-state photoluminescence at ambient temperature mainly originating from the phosphine ligands PPh₃ coordinating to the metal Cu(Ⅰ) ions.