Derivatives of bivalent germanium, tin, and lead. Part XVI. Crystal and molecular structure of tin(II) bis(O-methyl dithiocarbonate)

Abstract

The structure of the title compound has been determined from diffractometer data by Patterson and Fourier techniques. Crystals are monoclinic, space group P2₁/c, a= 12.3328(9), b= 4.4283(8), c= 19.4710(9)Å, β= 106.799(1)°, Z= 4. Discrete molecules are stacked parallel to the c axis. Each tin atom is chelated by two O-methyl dithiocarbonato-groups resulting in pseudo-trigonal bipyramidal geometry at tin, the lone pair occupying an equatorial site. The Sn–S(ax) bond distances are longer [2.817(4)Å] than Sn–S(eq)[2.623(3)Å], and the S–Sn–S(ax) and S–Sn–S(eq) valence-bond angles are reduced from ideality to 140.8(1) and 99.3(1)°.