222401-80-1Relevant academic research and scientific papers
Metal complexes of heteroarenes, X[1]. η1 -coordination of phosphinine: Synthesis and structure of cis-dichloro-bis(2,6-dimethyl-4-phenyl-phosphinine)platinum
Elschenbroich, Christoph,Voss, Steifen,Harms, Klaus
, p. 209 - 213 (1999)
Cis-Dichloro-bis(2,6-dimethyl-4-phenyl-η 1-phosphinine)platinum (3) has been prepared by ligand substitution from cis -dichloro(2,5-cyclooctadiene)platinum and characterized by spectroscopy (1H, 13C, 31P NMR, IR, UV-Vis), CV and X-ray diffraction (space group P21/c, a = 14.998, b = 16.540, c = 11.506 A, α = γ = 90°, β = 92.46°, Z = 4). In line with findings for similar P hybridization states, the Pt-P bond length (221 pm) in 3 equals that in η1-phosphaalkene Pt complexes and falls short of the respective parameters in Pt phosphane species. The stretching frequencies νPtCl and the bond length Pt-Cl indicate that phosphinines and phosphaalkenes, relative to phosphanes, adopt a lower position on the trans-influence scale. This gradation is also suggested by the coupling constants 1J(195Pt,31P).
