Syntheses, structures and properties of two mononuclear copper(I) complexes with N-heterocyclic ligands. Issue 18 (17th September 2019)

• Record Type: Journal Article
• Authors: Qu, Yao; Wang, Cong; Zhao, Kun; Wu, Yancong; Huang, Guozhen; Han, Xintong; Wu, Huilu
• Is Part Of: Journal of coordination chemistry. Volume 72:Issue 18(2019)
• Page Start: 3046
• Page End: 3056
• Publication Date: 2019-09-17
• Subjects: Copper(I) complex -- photoluminescence -- crystal structure -- electrochemical -- N-heterocyclic ligand; Coordination compounds -- Periodicals; 541.2242
• DOI: 10.1080/00958972.2019.1675049
• Languages: English
• ISSNs: 0095-8972

Abstract

Abstract: Two mononuclear Cu(I) complexes, [Cu(PBO)(PPh3 )2 ]·PF6 ·CH2 Cl2 (1 ) and [Cu(PBM)(PPh3 )2 ]·PF6 (2 ) (PBO = 2-(2′-pyridyl)benzoxazole, PBM = 2-(2′-pyridyl)benzimidazole, PPh3 = 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 1 and 2, the Cu(I) ions are four-coordinate and the coordination geometry around the Cu(I) is distorted tetrahedral. Photoluminescent investigation shows that 1 and 2 exhibit distinct tunable green (523 nm)-to-yellow (557 nm) photoluminescence by varying the N -heterocyclic ligands. Electrochemical properties of 1 and 2 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 N -heterocyclic ligands. Abstract :