(Z)- and (E)-1-methylthio-1-triphenyl-stannyl-2-phenylethene

Article abstract of DOI:10.1107/S0108270198015200

The structures of the title compounds, (Z)-Ph₃Sn-C(SMe)=CHPh, (I), and (E)-Ph₃Sn-C(SMe)=CHPh, (II) {both [Sn(C₆H₅)₃(C₉H₉S)], (1-methylthio-2-phenyl-ethenyl)triphenyltin}, were determined by single-crystal X-ray diffraction at room temperature. Both structures consist of discrete molecules in which the Sn atom is tetrahedrally coordinated by three phenyl groups and one 1-methylthio-2-phenylethenyl group. The planar ethenyl skeleton forms angles of 58.9 (2) and 34.0 (3)° with the 2-phenyl substituent in (I) and (II), respectively, excluding π interactions between them. In Z-isomer (I), the methyl substituent on sulfur lies in the plane of the ethenyl group [torsion angle C-S-C=C 3.0 (5)°], but this is not the case in E-isomer (II), which reveals a torsion angle C-S-C=C of 156.1 (8)°.