S. Otto et al., STRUCTURAL TRANS EFFECT IN TRANS-[PTMEX(PPH(3))(2)] COMPLEXES - A COMPARATIVE H-1-NMR STUDY AND THE CRYSTAL-STRUCTURE OF TRANS-[PTMECL(PPH(3))(2)], South African Journal of Chemistry, 48(3-4), 1995, pp. 114-119
A series of complexes of the type trans-[PtMeX(PPh(3))(2)] was investi
gated by means of LH NMR spectroscopy. Correlations were obtained for
the chemical shifts and coupling constants of the methyl proton resona
nces as a function of the nucleophilic reactivity constants and the re
lative structural trans effect of the different X ligands. The X-ray c
rystal structure of one of the complexes in the series, trans-[PtMeCl(
PPh(3))(2)], was determined. The compound crystallized as a 50% disord
ered structure in the triclinic space group P (1) over bar with a = 9.
225(2), b = 9.625(2). c = 10.415(2) Angstrom, alpha = 72.52(2), beta =
91.95(2), gamma = 112.08(2)' and Z = 1. The structure was refined to
R = 0.022 for 2874 independent reflections. The structural trans effec
t of the methyl group is compared with literature data for similar com
plexes.