Abstract
A series of organotin(IV) complexes with Schiff base ligand pyruvic acid 3-hydroxy-2-naphthoyl hydrazone [R 2SnLY] 2, L = 3-HO–C 10H 6-2-CONHN C(CH 3)COOH, R = n-C 4H 9, Y = CH 3OH ( 1), R = n-C 4H 9, Y = N ( 2), R = PhCH 2 ( 3), R = Ph, Y = CH 3OH ( 4), R = Me, ( 5) and [R 3SnLY], L = 3-HO–C 10H 6-2-CONHNC(CH 3)COOH, R = n-C 4H 9, Y = H 2O, ( 6), R = Ph ( 7), R = Me ( 8) have been synthesized. These complexes have been characterized by elemental analysis, IR, 1H and 119Sn NMR spectra. The crystal and molecular structure of complexes 1, 2 and 6 have been determined by X-ray single crystal diffraction. Results showed that complex 1 has a dimeric structure and the central tin atom is rendered seven-coordinate in a distorted pentagonal-bipyramid configuration. The complex 2 has a monoclinic structure and the central tin atom is rendered six-coordinate in octahedrally configuration with a planar of SnO 3N unit and two apical aryl C atoms. And the whole structure consists of molecular units connected by weak intermolecular Sn⋯N and O–H⋯N interactions. In the complex 6, the central tin atom is five-coordinate in distorted trigonal-bipyramidal geometry.
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