Synthesis and characterization of adducts of ethane-1,2-dithiolato-antimony(III) chloride. X-ray structure of the 1,10-phenanthroline derivative

In the metallacycle 1-chloro-2,5-dithiastibolane, [Sb(SCH2)2Cl], antimony(III) conserves a residual coordination ability. Adducts with monodentate (dimethyl sulfoxide) and chelating (2,2'-bipyridine and 1,10-phenanthroline) ligands were obtained and characterized by IR spectra. The X-ray crystal structure of chloro(1,10-phenanthroline)(ethane-1,2-dithiolato[2-]-S,S')antimony(III) has shown that two independent molecules are contained in asymmetric units. The coordination geometry about the antimony is distorted rectangular pyramidal without any intermolecular association