Trans influence of triphenylstibine. Crystal and molecular structures of cis-[PtCl2(SbPh3)2] and trans-[PtI2(SbPh3)2]
作者:Ola F. Wendt、Alessandra Scodinu、Lars I. Elding
DOI:10.1016/s0020-1693(97)06130-6
日期:1998.8
Crystals of cis-[PtCl2(SbPh3)(2)] (1) are monoclinic, space group P2(1)/a with a = 20.5708(12), b = 10.1942(4), c = 33.3984(15) Angstrom, beta = 94.394(4)degrees and Z = 8. Substitution of chloride for iodide yields trans-[PtI2(SbPh3)(2)] (2), the crystals of which are monoclinic, space group P2(1)/c with a = 18.108(4), b = 10.102(2), c = 19.1 15(5) Angstrom, beta = 95.241(16)degrees and Z = 4. The average Pt-Cl distance in 1 is 2.338(12) Angstrom, implying a trans influence of triphenyl stibine comparable with that of triphenyl phosphine, as opposed to what has been reported earlier. IR and Raman data for 1 and 2 are reported and discussed. (C) 1998 Elsevier Science S.A. All rights reserved.