Abstract
The reaction of CdCl 2· 1 2 H 2O with cinoxacin in DMSO solution affords the [Cd 2(Cx) 4(DMSO) 2]·2H 2O dimeric complex ( I) which has been characterized by single crystal X-ray diffraction; complex II (Cd(Cx) 2·H 2O) was prepared by dissolving I in a minimum amount of water. Compound I is triclinic, space group P 1 with unit cell dimensions: a=8.960(1), b=12.084(5), c=13.696(6) Å, α=73.96(4), β=84.69(4), γ=80.93(49)°, V=1405.5(9) Å 3. Each dimer contains cadmium atoms bridged by two carboxylate oxygen atoms from two cinoxacinate (Cx) ligands generating planar Cd 2O 2 rings. The metal environment is formed by two O carbox and O ceto atoms from the cinoxacinate monoanions, one oxygen atom of the DMSO molecule and a carboxylate oxygen atom which acts as a bridge. One of the coordinated cinoxacinate molecules acts as a bidentate chelate and bridging ligand and the other one as a bidentate chelate ligand. The solid-state IR and 13C NMR spectra of both compounds are discussed in detail with regard to the crystal structure of complex I.
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