Abstract

An efficient method was developed for the preparation of three tetraorganodistannoxane complexes, (C2H5)8Sn4Cl2(CH3O)2O2 (1), (CH3)8Sn4(C3H4N3S)2(CH3O)2O2 (2) and (C4H9)8Sn4(C3H4N3S)2(CH3O)2O2 (3). All prepared complexes were characterized by infrared, 1H, 13C and 119Sn NMR spectroscopes and elemental analysis. The molecular structure of a representative complex (1) was determined by single-crystal X-ray diffraction. Results showed that 1 is a tetranuclear, centrosymmetric dimeric, and contains two endo-cyclic five-coordinated tin atoms and two exo-cyclic five-coordinated tin atoms. Compound 1 lies about a center of inversion and the tetranuclear molecule features a three-ring-staircase Sn4O4 core. The asymmetric unit of 1 contains two independent Sn(IV) atoms and a 2D infinite rigid chain structure forms via C–H···Cl interactions between tetranuclear units.

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