ORGANOTIN COMPLEXES WITH 1-METHYL-2(3H)-IMIDAZOLINETHIONE - THE CRYSTAL-STRUCTURE OF O[1-METHYL-2(3H)-IMIDAZOLINETHIONE]DIMETHYLTIN(IV)

The compounds [SnMe2X2(Hmimt)], [SnMe2X2(Hmimt)2] and (Et4N)[SnMe2X3(H mimt)] (X = Cl or Br; Hmimt = 1-methyl-2(3H)-imidazolinethione) have b een prepared and characterized by conductivity measurements and by IR, Raman, Mossbauer and H-1, C-13 and Sn-119 NMR spectroscopy. The struc ture of [SnMe2Cl2(Hmimt)] was determined by X-ray diffraction. Its cry stals are triclinic, space group P1BAR, with a 9.702(2), b 9.375(2), c 7.119(1) angstrom, alpha 68.1(2), beta 86.6(2), gamma 85.6(2)-degrees , U 598.7 angstrom3, Z = 2, R = 0.062, R(w) = 0.058 and consist of chl orine-bridged [SnMe2Cl2(Hmimt)] dimers in which the hexacoordinate tin atoms have distorted octahedral environments and the thiones are S-bo nded. Neighbouring dimers are linked by NH ... Cl bonds. Mossbauer and vibrational data suggest octahedral coordination for the tin atom in [SnMe2X2(Hmimt)2] and (Et4N)(SnMe2X3(Hmimt)].