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Acta Cryst. (2012). E68, m1546
[ doi:10.1107/S160053681204771X ]

Di-[mu]2-isopropanolato-octamethylbis([mu]-4-methyl-5-sulfanylidene-4,5-dihydro-1H-1,2,4-triazol-1-ido-[kappa]2N1:N2)di-[mu]3-oxido-tetratin(IV)

E. Najafi, M. M. Amini and S. W. Ng

Abstract: The tetranuclear title compound, [Sn4(CH3)8(C3H7O)2O2(C3H4N3S)2], lies about a center of inversion; the molecule features a three-rung-staircase Sn4O4 core in which two SnIV atoms are bridged by the 4-methyl-5-sulfanylidene-4,5-dihydro-1H-1,2,4-triazol-1-ide group. The negatively charged N atom of the group binds to the terminal SnIV atom at a shorter distance [Sn-N = 2.236 (2) Å] compared with the neutral N atom that binds to the central SnIV atom [Sn[leftwards arrow] N = 2.805 (2) Å]. The terminal SnIV atom is five-coordinate in a cis-C2SnNO2 trigonal-bipyramidal geometry [C-Sn-C = 136.4 (1)°], whereas the central SnIV atom is six-coordinate in a C2SnNO3 skew-trazepoidal bipyramidal geometry [C-Sn-C = 145.4 (1)°]. The C atoms of the isopropoxy group are disordered over two positions in a 0.591 (7):0.409 (7) ratio.


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