Novel structurally characterized hetero‐bimetallic [Zn(II)2M(II)] (M = Ca and Sr) bis(salamo)‐type complexes: DFT calculation, Hirshfeld analyses, antimicrobial and fluorescent properties

• Published in: Applied organometallic chemistry Vol. 34; no. 1
• Main Authors: Liu, Chang, An, Xiao‐Xin, Cui, Yong‐Fan, Xie, Ke‐Feng, Dong, Wen‐Kui
• Format: Journal Article
• Language: English
• Published: Chichester Wiley Subscription Services, Inc 01-01-2020
• Subjects: Absorption spectra; Alkaline earth metals; Antiinfectives and antibacterials; antimicrobial activity; asymmetrical bis(Salamo)‐type complex; Asymmetry; Bimetals; Calcium; Chemistry; Density functional theory; DFT calculation; Fluorescence; fluorescent property; Hirshfeld surface analysis; Infrared spectroscopy; Ligands; Mathematical analysis; Optical properties; Single crystals; Strontium; Synthesis; Titration; Transition metals; Zinc
• ISSN: 0268-2605; 1099-0739
• DOI: 10.1002/aoc.5272

Two hetero‐bimetallic [Zn(II)2M(II)] (M = Ca and Sr) complexes [Zn2Ca(L)(OAc)2] (1) and [Zn2Sr(L)(OAc)2] (2) with a novel asymmetrical bis(salamo)‐type tetraoxime ligand (H5L) were designed and synthesized, and characterized by elemental analyses, FT‐IR spectra, UV–vis absorption spectra, Density Functional Theory (DFT) calculation, Hirshfeld surface analyses and X‐ray single crystal diffractions. Compared with the symmetric bis(salamo)‐type ligands, the ligand H5L and its [Zn(II)2M(II)] (M = Ca and Sr) asymmetrical bis(salamo)‐type complexes synthesized for the first time in this paper have more novel structures and better properties. The results of ultraviolet titration show that the coordination ratio of ligand, alkaline earth metal and transition metal is 1:1:2. Complexes 1 and 2 have good luminescent properties and obvious antimicrobial activities.
Two hetero‐trinuclear [Zn(II)2M(II)] (M = Ca and Sr) bis(salamo)‐type complexes [Zn2Ca(L)(OAc)2] (1) and [Zn2Sr(L)(OAc)2] (2) were designed and synthesized, and characterized structurally. The coordination ratio and structure of the complexes were further determined by ultraviolet titration experiments. The results show that the coordination ratio of transition metal, alkaline earth metal and ligand is 2:1:1. The complexes have good properties, such as good luminescent properties and obvious antimicrobial activities.