Synthesis and Crystal Structure of a Hexameric Organooxotin Cluster from Benzilic Acid

The title complex [nBuSn(O)O2C(OH)CPh2]6·2H2O has been synthesized by the reaction of n-BuSn(O)OH with benzilic acid in 1:1 molar radio and characterized by IR, 1H NMR spectra and elemental analysis. The crystal structure was determined by X-ray diffraction. It crystallizes in triclinic, space group P1 with a = 1.3543(2), b = 1.4593(2), c = 1.5293(2) nm, a = 102.075(2), β = 115.571 (2), γ = 93.308(3)°, Z = 1, V = 2.6282(7) nm3, Mr = 2550.21, Dc = 1.611 g/cm3,μ =1.477 mm-1, F(000) = 1280, R = 0.0309 and wR = 0.0729. The structure shows a distorted octahedral configuration with six-coordination for the central tin atom.