STRUCTURE OF DIMERIC DICHLORO(4,4'-DIMETHYL-2,2'-BIPYRIDINE)COPPER(II) HEMIHYDRATE
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The crystal consists of discrete dimeric units, di-mu-chloro-bis[chloro(4,4'-dimethyl-2,2'-bipyridine)copper(II)] hydrate, linked to one water molecule and to another unit by van der Waals forces. Each dimeric unit contains a Cu2Cl2 core surrounded by two chlorine ions and two 4,4'-dimethyl-2,2'-bipyridine ligands. The geometry about each Cu atom is best described as a distorted trigonal bipyramid. The basal plane contains the N(2) atom of 4,4'-dimethyl-2,2'-bipyridine, the Cl(2a) atom that bridges the two monomers, and the Cl(1) ion. The two axial sites are occupied by the N(1) atom and the Cl(2) ion.