Synthesis and structural characterizations of diorganotin(IV) complexes with 2-pyrazinecarboxylic acid

Two types of diorganotin(IV) complexes {[R2Sn(O2CC4H3N2)]2O}2 (when R = n-octyl 1, 2-ClC6H4CH23, 2-FC6H4CH25, 4-FC6H4CH27) and R2Sn(O2CC4H3N2)2 (when R = n-octyl 2, 2-ClC6H4CH24, 2-FC6H4CH26, 4-FC6H4CH28) have been prepared in 1:1 or 1:2 molar ratios by reactions of diorganotin oxide with 2-pyrazinecarboxylic acid, All complexes are characterized by elemental, IR, 1H and 13C NMR spectra. And complexes {[(n-C8H17)2Sn(O2CC4H3N2)]2O}2 (1) and (n-C8H17)2Sn(O2CC4H3N2)2 (2) have been determined by X-ray single crystal diffraction.