Butyltin(IV) 2-sulfobenzoates: synthesis, structural characterization and their cytostatic and antibacterial activities.

Three butyltin complexes with 2-sulfobenzoic acid [Sn(C(4)H(9))(2){O(3)SC(6)H(4)COO-2}(H(2)O)]·(C(2)H(5)OH) (1), [Sn(C(4)H(9))(3){O(3)SC(6)H(4)COOH-2}] (2) and [Sn(2)(C(4)H(9))(6){μ-O(3)SC(6)H(4)COO-2}] (3) have been synthesized and characterized by IR and (1)H, (13)C and (119)Sn NMR spectra. They show interesting properties in solid state and solutions because there are many modes of coordination of the Sbz ligand. The structure of complex 1 has been determined by X-ray crystallography.

Synthesis, structure and antitumor activity of [RhCl3(N-N)(DMSO)] polypyridyl complexes.

The [RhCl(3)(N-N)(DMSO)] complexes, the N-N being 2,2'-bipyridine (1), 1,10-phenanthroline (2), 4,7-diphenyl-1,10-phenanthroline (3), 4,4'-dimethyl-2,2'-bipyridine (4) and 1,10-phenanthroline-5,6-dione (5), have been synthesized and characterized with spectroscopic methods. The compounds 2-5 adopt mer- and complex 1 fac-structure. The molecular and electronic structure studies of mer- and fac-complexes with bpy and phen ligands at the DFT B3LYP level with 3-21G( * *) basis set showed that mer-isomers are more stable.