期刊
INORGANICA CHIMICA ACTA
卷 521, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2021.120356
关键词
Dinuclear copper complex; Mix valence; Different coordination; Electrochemistry; Magnetism
资金
- Guangxi Natural Science Foundation, China [AD19245031, 2019GXNSFBA245063]
- School-level scientific research project of Wuzhou University (Doctoral Fund Project) [2020A001]
- Science and Technology Planning Project of Wuzhou City, GuangxZhuang Autonomous Region, China [202002005]
- Science and Technology Project of Hechi City, Guangxi Zhuang Autonomous Region, China [2019025]
Through the reaction of an organic ligand with copper ions under temperature conditions, a mixed valent copper complex was successfully prepared. Structural analysis, XPS testing, magnetic susceptibility, and electrocatalytic results confirmed the structure and properties of the complex.
As we all know, the Cu complexes have been extensively studied as synthetic models because of their different valences. Here, the organic ligand of 1-methyl-1H-benzo[d]imidazol-2-yl)methanol (HL) was used to react with Cu(ClO4)2?6H2O in CH3CN, we successfully obtained a mix valent copper complex [CuII(L1)2][CuI(HL)2]?ClO4 (1) under 60 ?C. The structure analysis suggested that the Cu1 ion was coordinated with two nitrogen atoms from two HL ligands, which two ligands without removing H ions. The Cu2 ion was coordinated with two oxygen ions and two nitrogen atoms from two L1 ligands, which two ligands with removing H ions. The X-ray photoelectron spectroscopy (XPS) test showed that the valence state of Cu1 ion was +1, and the Cu2 ion was +2. The magnetic susceptibility was exhibited ferrimagnetism with g = 2.04. The electrocatalytic results suggested that CuIICuI species reacted with O2 to give a superoxide radical intermediate for complex 1.
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