SYNTHESIS AND MOLECULAR-STRUCTURE OF NBU2[(MEO)3C6H2C(O)N2CHC6H4O]SN FORMED IN THE REACTION OF DI-N-BUTYLTIN(IV) OXIDE WITH 3,4,5-TRIMETHOXY-BENZOYL SALICYLAHYDRAZONE

The title complex was synthesized and characterized by H-1, C-13, Sn-1 19 NMR and IR spectra. A single crystal X-ray diffraction study confir med its molecular structure and revealed that 3,4,5-trimethoxy-benzoyl salicylahydrazone was a tridentate and approximately planar ligand. T he complex crystallizes in the triclinic space group P1BAR with a = 9. 208(3), b = 12.536(2), c = 12.187(4) angstrom, alpha = 113.12(2), beta = 90.58(2), gamma = 81.42(2), V = 1277.5(6) angstrom, Z = 2. The stru cture was refined to R = 0.033 and R(w) = 0.041 for 3944 observed inde pendent reflections. The tin atom has a distorted trigonal bipyramidal coordination. The Sn-C bond lengths are 2.129(5) and 2.113(5) angstro m (av. 2.121(5) angstrom), the C-Sn-C angle is 123.3(2); the bond leng th between the tin atom and the chelating nitrogen is 2.173(3) angstro m. Two chain carbon atoms and the chelating nitrogen atom occupy the b asal plane. The skeleton of two erect oxygen atoms and the tin atom is bent (O-Sn-O angle = 153.5(1)). In the complex, the ligand exists in the enol-form.