Syntheses, structures and properties of two mononuclear copper(I) complexes with <i>N</i>-heterocyclic ligands
收藏资源简介：
Two mononuclear Cu(I) complexes, [Cu(PBO)(PPh<sub>3</sub>)<sub>2</sub>]·PF<sub>6</sub>·CH<sub>2</sub>Cl<sub>2</sub> (<b>1</b>) and [Cu(PBM)(PPh<sub>3</sub>)<sub>2</sub>]·PF<sub>6</sub> (<b>2</b>) (PBO = 2-(2′-pyridyl)benzoxazole, PBM = 2-(2′-pyridyl)benzimidazole, PPh<sub>3</sub> = triphenylphosphine), have been synthesized and characterized by elemental analyses, IR, single crystal X-ray diffraction, fluorescence spectroscopy, and cyclic voltammetry. The structural analysis revealed that in <b>1</b> and <b>2</b>, the Cu(I) ions are four-coordinate and the coordination geometry around the Cu(I) is distorted tetrahedral. Photoluminescent investigation shows that <b>1</b> and <b>2</b> exhibit distinct tunable green (523 nm)-to-yellow (557 nm) photoluminescence by varying the <i>N</i>-heterocyclic ligands. Electrochemical properties of <b>1</b> and <b>2</b> have been investigated by cyclic voltammetry. The results suggest the frontier molecular orbits and the HOMO-LUMO energy gaps of these cuprous complexes are effectively adjusted through the introduction of different <i>N</i>-heterocyclic ligands.
