Di--aqua-bis[(N-salicylidene--alaninato-3O,N,O′)copper(II)] urea disolvate
Crystals of the title compound, [Cu2(C10H9NO3)2(H2O)2]·2CH4N2O, consist of two (N-salicylidene--alaninato-3O,N,O′)copper(II) coordination units bridged by two water moieties to form a dimer residing on a crystallographic inversion center, along with two uncoordinated urea molecules. The CuII atom has square-pyramidal coordination, with three donor atoms of the tridentate Schiff base and an O atom of the bridging aqua ligand in the basal plane. The axial position is occupied by the second bridging water ligand at a distance of 2.5941 (18) Å. Hydrogen bonds between molecules of urea and the neighboring dimer units lead to the formation of a two-dimensional grid of molecules parallel to . The superposition of the normals of the pyramidal base planes in the direction  indicates possible – interactions between the neighboring units.
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Document Type: Research Article
Publication date: 2004-06-01