Synthesis, characterization and properties of organotin complexes dibutyltin(IV) bis(heteroaromatic carboxylate) and crystal structure of dibutyltin(IV) bis(2-thiazolylcarboxylate)

The six organotin complexes dibutyltin(IV) bis(heteroaromatic carboxylate) were synthesized by the reaction of (n-BU)(2)SnO with heteroaromatic carboxylic acid in 1:2 molar ratio. These complexes have been characterized by elemental analysis, IR, H-1, C-13 and Sn-119 NMR. The crystal structure of dibutyltin(IV) bis(2-thiazolylcarboxylate) was determined by X-ray single crystal diffraction. This compound is a weakly bridged dimer through weak interaction Sn...O between molecules. The tin atoms took six-coordinate skew-trapezoidal bipyramidal geometry. The crystal of complex 3 belongs to monoclinic symmetry with space group P2(1)/c, a = 1.863(2) nm, b = 2.220(3) nm, c = 1.0395(10) nm, beta = 90.275(16)degrees, Z = 8, V = 4.292(8) nm(3), D-c = 1.514 Mg/m(3), mu = 1.406 mm(-1), F(000) = 1968, S = 0.999, R = 0.0549, wR = 0.1011.