STRUCTURAL STUDIES ON DIMETHYLTIN(IV) CARBOXYLATES

In order to correlate Sn-119 Mossbauer parameters and structural data for dimethyltin(IV) derivatives, the molecular structures of bis(aceta to)dimethyltin(IV) and bis(trifluoroace tato)dimethyltin(IV) were dete rmined by single crystal X-ray diffration. Crystals of Me(2)Sn(OOCCH3) (2) are monoclinic, a = 26.282(4), b = 5.282(1), c = 14.434(3) Angstro m, beta = 101.17(2)degrees, Z = 8, space group C2/c, and those of [Me( 2)Sn(OOCCF3)(2)](n) are monoclinic, a = 8.444(1), b = 17.689(1), c = 1 5.368(1) Angstrom, beta = 93.013(9)degrees, Z = 8, space group Cc. The structures were solved by the Patterson method and were refined by fu ll-matrix least-squares procedures to R = 0.025 and 0.027 (R(w) = 0.02 3 and 0.030) for 2298 and 4182 reflections with I greater than or equa l to 3 sigma(F-2), respectively.