Investigation of syntheses, structures, theoretical calculations, and fluorescence properties of two N 3 O-donor half-salamo-type Cu(II) complexes

作者：Li-Li Man, Ya‐Ting La, Le-Chuan Feng, Yang Zhang, Wen‐Kui Dong · 发表于：Journal of Coordination Chemistry · 年份：2022 · DOI：10.1080/00958972.2022.2147000 · 被引用次数：58 · 研究领域：Metal complexes synthesis and properties、Metal-Organic Frameworks: Synthesis and Applications、Crystal structures of chemical compounds

The coordination behaviors of asymmetric quinoline-decorated half-salamo-type ligand HL1 with Cu(NO3)2·3H2O and Cu(OAc)2·H2O were studied. Two Cu(II) complexes, [Cu(L1)(NO3)]·CH3CH2OH (1) and [Cu2(L2)2] (2), were isolated and characterized by X-ray crystallography, FTIR, UV–vis, and fluorescence spectroscopies. Structural analyses showed that 1 is a mononuclear species, whereas 2 is a binuclear entity. Spontaneous cleavage along the oxime N-O bond close to quinoline ring of the ligand HL1 occurred upon reaction with Cu(OAc)2·H2O, yielding an unexpected complex 2. Moreover, DFT theoretical calculations and Hirshfeld surfaces analyses of the ligand HL1 and its corresponding Cu(II) complexes were investigated in detail.