First example of a 2:1 cocrystal of mixed Cu(I)/Cu(II) complexes and a novel ferromagnetic bis(μ-hydroxo)dicopper(II) complex with a bis(pyrazol-1-yl)methane bidentate ligand

Chang Chuan Chou, Chan Cheng Su, Hui Lien Tsai, Kwang Hwa Lii

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68 Citations (Scopus)

Abstract

A unique 2:1 cocrystal of mixed Cu(I)/Cu(II) complexes [Cu I(H2CPz2)(MeCN)2](ClO4) (1) and [CuII(H2CPz2)2(ClO 4)2] (4), a novel ferromagnetic ClO4 --bridged bis(μ-hydroxo)dicopper(II) complex, [Cu 2(H2CPz2)2(OH)2(ClO 4)](ClO4)(CH3-CN)0.5 (5), and a bischelated copper(I) complex, [Cu(H2CPz2) 2](ClO4) (2), prepared from a one-pot reaction of [Cu(MeCN)4](ClO4) and H2CPz2, are described. The structures of these complexes have been determined by X-ray crystallographic methods. The Cu(I)-N(acetonitrile) bond distances in complex 1 are nonequivalent (1.907(8) and 2.034(9) Å), leading to the dissociation of one MeCN to form a Y-shaped complex, [CuI(H2CPz 2)(MeCN)](ClO4) (3), which is oxidized readily in air to form complex 5 with a butterfly Cu2O2 core.

Original languageEnglish
Pages (from-to)628-632
Number of pages5
JournalInorganic Chemistry
Volume44
Issue number3
DOIs
Publication statusPublished - 2005 Feb 7

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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