title: Anion exchange induced tunable catalysis properties of an uncommon butterfly-like tetranuclear copper(II) cluster and magnetic characterization.
abstract: An uncommon butterfly-like tetranuclear copper(ii) cluster with the formula {[Cu(4)(μ(3)-OH)(2)(μ(4)-Cl)(H(2)O)(2)(L)(2)]·Cl(H(2)O)(7)}(n) (1) (H(2)L = 1,2-bis[3-(1,2,4-triazolyl)-4-amino-5-carboxylmethylthio]ethane) has been synthesized. Compound 1 exhibits interesting anion exchange characteristics, in which both guest and coordinated Cl(-) can be replaced by I(-) or NO(3)(-) in water. Furthermore, a high catalytic selectivity to produce poly(phenylene ether) by the oxidative coupling of 2,6-dimethylphenol in water is found to be 74% for 1 and 87% for the anion-exchanged product 1-MI(x), respectively. Additionally, the antiferromagnetic interaction among Cu ions for compound 1 is also found.
authors.affiliation: Department of Chemistry, Zhengzhou University, Zhengzhou, P.R. China.
authors.forename: Wen-Juan
authors.initials: WJ
authors.lastname: Chu
authors.forename: Hong-Chang
authors.initials: HC
authors.lastname: Yao
authors.forename: Yao-Ting
authors.initials: YT
authors.lastname: Fan
authors.forename: Hong-Wei
authors.initials: HW
authors.lastname: Hou