Syntheses and properties of copper(II) triperchlorates with N,N',N",N'"-tetrakis(2-aminoethyl)-1,4,8,11-tetraazacyclotetradecane and an anion.
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概要
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Copper complexes of the title ligand (taec) of the general formula Cu<SUB>2</SUB>(taec)X(ClO<SUB>4</SUB>)<SUB>3</SUB> (X=F, Cl, Br, I, HCOO, CH<SUB>3</SUB>COO, NO<SUB>2</SUB>) were prepared and characterized. The formation constants for [Cu<SUB>2</SUB>(taec)]<SUP>4+</SUP>+X<SUP>−</SUP>=[Cu<SUB>2</SUB>(taec)X]<SUP>3+</SUP>(X=F, Cl, Br, I) were determined spectrophotometrically in aqueous solution. The stabilities of the halogen-copper bonds were greatly enhanced relative to those of ordinary halogenocopper complexes, the order of the formation constants being Cl>Br>I>F. This result can be explained as that the anion is trapped in a cavity formed by two copper ions and the methylene chains of taec molecule, thereby the stability of the bound anion is enhanced and the fitness of the size of anion to the cavity is the most important factor for the formation constant.
- 公益社団法人 日本化学会の論文
著者
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Mikuriya Masahiro
Department Of Chemistry And Open Research Center For Coordination Molecule-based Devices School Of S
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Kida Sigeo
Department of Chemistry Wakayama University
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Murase Ichiro
Department of Chemistry, Faculty of Science, Kyushu University 33
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Daizeng Liao
Department of Chemistry, Faculty of Science, Kyushu University 33
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Harada Chizu
Department of Chemistry, Faculty of Science, Kyushu University 33
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