research papers
The heteroleptic cuprous complex [Cu(POP)(CH3CN)(4-PBO)]PF6, where POP is the diphosphane ligand {2-[2-(diphenylphosphanyl)phenoxy]phenyl}diphenylphosphane and 4-PBO is the N-containing ligand 2-(pyridin-4-yl)-1,3-benzoxazole, displays a CuP2N2 distorted tetrahedral coordination geometry. The electronic absorption, photoluminescence and thermal stability properties of this complex have been studied. A yellow emission band is attributed to an excited state resulting from metal–ligand charge transfer.