Synthesis, characterization and structural studies of diorganotin(IV) complexes with Schiff base ligand salicylaldehyde isonicotinylhydrazone
作者:Han Dong Yin、Min Hong、Gang Li、Da Qi Wang
DOI:10.1016/j.jorganchem.2005.04.049
日期:2005.8
Eight diorganotin(IV) complexes of salicylaldehyde isonicotinythydrazone (H(2)SalN) R2Sn(SalN) R = t-Bu 1, Ph 2, PhCH2 3, o-ClC6H4CH2 4, p-ClC6H4CH2 5, m-ClC6H4CH2 6, o-FPhCH2 7, p-FC6H4CH2 8 were prepared. All complexes 1 8 have been characterized by elemental, IR, H-1, C-13 and Sn-119 NMR analyses. The crystal structures of H(2)SalN and complex I were determined by X-ray crystallography diffraction analyses. Studies show that H(2)SalN is a tridentate planar ligand. For complex 1, the tin atom lies in this plane and forms a five- and six-membered chelate ring with the tridentate ligand. A comparison of the IR spectra of the ligand with those of the corresponding complexes, reveals that the disappearance of the bands assigned to carbonyl unambiguously confirms that the ligand coordinate with the tin in the enol form. (c) 2005 Elsevier B.V. All rights reserved.