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Di-μ2-ethanolato-octamethylbis(μ-4-methyl-5-sulfanylidene-4,5-dihydro-1H-1,2,4-triazol-1-ido-κ2N1:N2)di-μ3-oxido-tetratin(IV)

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Author(s): Ezzatollah Najafi | Mostafa M. Amini | Seik Weng Ng

Journal: Acta Crystallographica Section E
ISSN 1600-5368

Volume: 68;
Issue: 12;
Start page: m1545;
Date: 2012;
Original page

ABSTRACT
The tetranuclear title compound, [Sn4(CH3)8(C2H5O)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 = 2.240 (3) Å] compared with the neutral N atom that binds to the central SnIV atom [Sn← N = 2.641 (3) Å]. The terminal SnIV atom is five-coordinate in a cis-C2SnNO2 trigonal–bipyramidal geometry [C—Sn—C = 127.5 (2)°], whereas the central SnIV atom is six-coordinate in a C2SnNO3 skew-trazepoidal bipyramidal geometry [C—Sn—C = 145.0 (2)°].

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