115603-58-2Relevant academic research and scientific papers
A multinuclear NMR study of asymmetrically coordinated η3-allyls in [PtCl(η3-allyl)(phosphine)] and [Pt(phenyl)(η3-allyl)(phosphine)] complexes
Clark, Howard C.,Hampden-Smith, Mark J.,Ruegger, Heinz
, p. 2085 - 2093 (2008/10/08)
The title complexes were prepared and fully characterized by multinuclear (1H, 31P, 13C, 195Pt) NMR methods. The 1H NMR resonances of the allyl groups were unequivocally assigned by using a combination of one- and two-dimensional NMR spectroscopic techniques. The spectroscopic data have been interpreted in terms of contributions of asymmetric η1-η2-allyl bonding modes to the more familiar symmetrical η3-allyl arrangement. The relative orientation and extent of the asymmetric η1-η2-bonding were shown to be markedly dependent upon the nature of the other ligands coordinated to platinum. On prolonged standing in chloroform solution, the title complexes rearranged to give the known complexes [X(R3P)Pt(μ-Cl)]2 and trans-XClPt(PR3)2 (X = Cl, Ph). Conversion of the allyl moiety to propene gas was shown by 1H NMR and gas chromatographic analysis.
