Synthesis and crystal structure of triphenyltin-2-(1,2-ethylenedithio) methylene-3-oxo-5-aryl-4-pentenicate

Nine triphenyltin - 2 - (1,2 - ethylenedithio) methylene - 3 - oxo - 5 - ar yl - 4 - pentenicates were synthesized. The crystal structure of the title compound 3b (C33H28O3S2Sn) was determined by X - ray diffraction analysis. The crystal belongs to triclinic system, space group P(1)overbar with a = 0 .9074 (2) nm, b = 1.6809(3)nm, c = 2.1834(4)nm, alpha =77.57(3)degrees, bet a = 88.04(3)degrees, gamma = 89.47(3)degrees, V = 3.2503nm(3), Z = 2, R = 0 .0592. In crystal of 3b, there exist intramolecular 0-Sn coordination bonds , with carboxylate group acting as a bidentate ligand: Sn(1)-0(1) = 0.2086( 5) and Sn(1)-0(2) = 0.2594nm, having a deformed trigonal bipyramidal geomet ry.