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.
All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Inorganic Chemistry