Synthesis, structural and photoluminescence studies of copper(I) complexes containing bis(azol-1-yl)methane derived bisphosphines

The synthesis and characterization of copper(I) complexes containing bisphosphines such as bis(2-diphenylphosphinoimidazol-1-yl)methane (1), bis(5-diphenylphosphinopyrazol-1-yl)methane (2) and bis(5-diphenylphosphino-1,2,4-triazol-1-yl)methane (3) is reported. Bisphosphines 1–3 exhibit bidentate (κ2P,P) chelating mode of coordination. The crystal structures of 4–6 have been established by single crystal X-ray crystallography. Luminescence spectra of complexes 7–9 recorded at room temperature in dichloromethane solution displayed single emission bands at 541, 542 and 519 nm, respectively, with moderate quantum yields.

Graphical abstractThis paper describes the synthesis of bis(1,2,4-triazol-1-yl)methane, bis(imidazol-1-yl)methane and bis(pyrazol-1-yl)methane derived bis(phosphine)s and their various copper(I) complexes and fluorescence studies.Figure optionsDownload full-size imageDownload as PowerPoint slide