Synthesis, structure, magnetic and catalytic behavior of a dinuclear copper(II) complex with triazendio ligands
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A dinuclear copper(II) complex [Cu2L4] has been prepared by the reaction of CuCl2·2H2O and 1-[(2-iodo)benzene]-3-[benzothiazole] triazene (HL). The complex has been characterized by X-ray crystallography and by physico-chemical and spectroscopic methods. In the solid state, there is a significant antiferromagnetic coupling between the copper(II) centers with a coupling constant (J) of − 558 cm−1. In homogeneous solution, the complex shows electrocatalytic activities for hydrogen generation from both acetic acid and neutral buffer with a turnover frequency of 50 mol of H2 per mole of catalyst per hour (mol H2/mol catalyst/h) at an overpotential (OP) of 941.6 mV, and 502 mol H2/mol catalyst/h at an OP of 836.7 mV.
This work was supported by the National Science Foundation of China (Nos. 20971045 and 21271073).
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