Novel heteroleptic copper(i) complexes merging the chelating 1,2-bis-diphenyldiphosphine and various L^X type coligands

Abstract

Three novel heteroleptic mononuclear copper(I) complexes with a chelating diphosphine 1,2-bis-diphenylphosphinobenzene ligand (dppb) and various monoanionic bidentate LX-type ligand derivatives, 2-methyl-8-hydroxyquinolinate (Me-Q), 6-methyl-2-picolinate (Me-Pic) and 2-(2′-pyridyl)benzimidazolate (pbim), were prepared. The complexes are of formulae [Cu(Me-Pic)(dppb)] (3), [Cu(Me-Q)(dppb)] (2) and [Cu(pbim)(dppb)] (4). The structures of two of the compounds were unambiguously confirmed by a complete single-crystal X-ray diffraction study. The complexes were also characterized by UV-Vis spectroscopy.