Dimethyl- and diethyltin(IV) compounds with perfluorobiphenyl-4-thiolate and perfluoronaphthalene-2-thiolate anions: The crystal structure of (CH3)(2)Sn(C12F9S)(2)

Compounds (CH3)(2)Sn(C12F9S)(2) (I), (CH3)(2)Sn(C10F7S)(2) (II), and (C2H5) (2)Sn(C10F7S)(2) (III) were synthesized. Single crystals of I were grown an d structurally characterized using X-ray diffraction analysis (1590 reflect ions, R = 0.0209). The crystals are orthorhombic, a = 40.848(8) Angstrom, b = 6.058(1) Angstrom, c = 11.183(2) Angstrom, V = 2767(1) Angstrom (3), rho (calcd.) = 2.024 g/cm(3), space group Pbcn, Z = 4. The structure is built from monomeric molecules. The coordination polyhedron of the Sn atom (the S nC2S2 core) is a distorted tetrahedron. Compounds I-III are volatile when h eated in vacuo. Thermolysis of these compounds results in SnO2 (in air) or SnS2 (in argon).