Di-μ2-methanolato-bis(μ-4-methyl-5-sulfanylidene-4,5-dihydro-1H-1,2,4-triazolido-κ2N1:N2)di-μ3-oxido-tetrakis[dibutyltin(IV)

Abstract

The asymmetric unit of the title distannoxane, [Sn4(C4H9)8(C3H4N3S)2(CH3O)2O2], contains two mol­ecules, each of which lies about an individual center of inversion. The tetra­nuclear mol­ecule features a three-rung-staircase Sn4O4 core in which two independent SnIV atoms are bridged by the triazolide group. The negatively charged N atom of the triazolide group binds to the terminal Sn atom at a shorter distance [Sn—N = 2.262 (3), 2.254 (3) Å] compared with the neutral N atom that binds to the central Sn atom[SnN = 2.617 (4); 2.830 (3) Å]. The oxide O atom is three-coordinate whereas the methano­late O atom is two-coordinate. The terminal Sn atom is five-coordinate in a cis-C3SnNO trigonal–bipyramidal environment, whereas the central Sn atom is six-coordinate in a C2SnNO3 skew-trapezoidal–bipyramidal geometry.