Synthesis, structural and spectral studies of five- and six-coordinate adducts of organotin(IV) halides containing dibenzylsulfoxide (dbso) as ligand. The crystal structures of fac-[MeSnCl3(dbso)2] and trans-[Ph2SnCl2(dbso)2]

Abstract

On the other hand, the reaction with n Bu 2 SnCl 2 forms the dimeric adduct [{ n Bu 2 SnCl 2 (dbso)} 2 ], which probably possesses octahedral tin(IV) nuclei and bridging chlorides. The adducts [MeSnCl 3 (dbso) 2 ] and [Ph 3 SnCl(dbso)] were also prepared and included in the study. All complexes were studied by microanalysis and IR, NMR ( 1 H, 13 C and 119 Sn) and Mössbauer spectroscopies to investigate their structural properties. The six-coordinate species fac-[MeSnCl 3 (dbso) 2 ] and trans-[Ph 2 SnCl 2 (dbso) 2 ] were also studied by single crystal X-ray diffractometry. These compounds crystallize in the orthorhombic, Pbcn, and monoclinic space group P2 1 /c, respectively, as discrete neutral molecules with the tin(IV) atom in a distorted octahedral geometry and the two dbso ligands in cis and trans positions, respectively.