Synthesis, characterization and properties of a copper complex with dicyano acetic acid methyl ester ligand derived from tetracyanoethylene

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• 关键词：TCNE ; Copper complex ; Molecular catalyst ; Proton or water reduction ; H2 evolution
• 刊名：Polyhedron
• 出版年：2017
• 出版时间：10 January 2017
• 年：2017
• 卷：121
• 期：Complete
• 页码：13-18
• 全文大小：1209 K
• 卷排序：121

文摘

The reaction of CuCl with tetracyanoethylene (TCNE) affords a copper(II) complex, [(DCAE)2Cu(H2O)2] 1 (DCAE: dicyano-acetic acid methyl ester, derived from TCNE). Its structure has been characterized by physics-chemical and spectroscopic methods. Magnetic studies exhibit that no magnetic coupling between two Cu2+ via DCAE− unit in the temperature range 300–9 K. Electrochemical studies show that this copper complex can act as an electrocatalyst for hydrogen generation both from acetic acid, with a turnover frequency (TOF) of 74 mol of H2 per mole of catalyst per hour an potential (OP) of 941.6 (in CH3CN), and from aqueous buffer (pH 7.0) with a TOF of 285 mol of H2 per mole of catalyst per hour at an OP of 787.6 mV.