with copper(II) chloride and copper(II) bromide have been studied in different chemical environments. Copper(II) chloride assisted C S bondcleavage of the organic moieties leading to the formation of copper(II) picolinate derivatives, whereas, under similar experimental conditions, no C S bondcleavage was observed in the reaction with copper(II) bromide. The resulted copper(II) complexes isolated
摘要 具有 N2S2 供体组 [L 1 = 1,2-双(2-吡啶甲硫基)乙烷,L 2 = 1,3-双(2-吡啶甲硫基)丙烷和 L 3 = 1,4-双(2-吡啶基甲硫基)丁烷]与氯化铜 (II) 和溴化铜 (II) 在不同的化学环境中进行了研究。氯化铜 (II) 辅助有机部分的 CS 键断裂,导致形成吡啶甲酸铜 (II) 衍生物,而在类似的实验条件下,在与溴化铜 (II) 的反应中未观察到 CS 键断裂。从不同介质中分离得到的铜 (II) 配合物已通过光谱和 X 射线晶体学工具进行了表征。
Copper(II) complexes of tetradentate N2S2 donor sets: Synthesis, crystal structure characterization and reactivity
Two mononuclear and one dinuclear copper(II) complexes, containing neutral tetradentate NSSN type ligands, of formulation [Cu-II(L-1)Cl]ClO4 (1), [Cu-II(L-2)Cl]ClO4 (2) and [Cu-2(II)(L-3)(2)Cl-2](ClO4)(2) (3) were synthesized and isolated in pure form [where L-1 = 1,2-bis(2-pyridylmethylthio)ethane, L-2 = 1,3-bis(2-pyridylmethylthio)propane and L-3 = 1,4-bis(2-pyridylmethylthio)butane]. All these green colored copper(II) complexes were characterized by physicochemical and spectroscopic methods. The dinuclear copper(II) complex 3 changed to a colorless dinuclear copper(I) species of formula [Cu-2(1)(L-3)(2)](ClO4)(2),0.5H(2)O (4) in dimethylformamide even in the presence of air at ambient temperature, while complexes I and 2 showed no change under similar conditions. The solid-state structures of complexes 1, 2 and 4 were established by X-ray crystallography. The geometry about the copper in complexes 1 and 2 is trigonal bipyramidal whereas the coordination environment about the copper(I) in dinuclear complex 4 is distorted tetrahedral. (C) 2008 Elsevier Ltd. All rights reserved.