522595-02-4Relevant academic research and scientific papers
Coordination modes of cis-P,P′-diphenyl-1,4-diphospha-cyclohexane to metal ions of Groups 9 and 10
Cucciolito, Maria Elena,De Felice, Vincenzo,Orabona, Ida,Panunzi, Achille,Ruffo, Francesco
, p. 209 - 216 (2003)
Complexes of a tertiary diphosphine with cyclic core, cis-P,P′-diphenyl-1,4-diphospha-cyclohexane (dpdpc), with metal ions of Groups 9 and 10 have been prepared and characterised. In neutral M(0) or M(II) (M=Pt, Pd) complexes the diphosphine acts as a bridge affording polynuclear products. Instead, in cationic mononuclear Pt(II) and Pd(II) species a clear preference for chelation of dpdpc is observed. Also the cation [Ni(dpdpc)2Cl]+ contains the two dpdpc moieties as chelates. The molecular and crystal structure of [Ni(dpdpc)2Cl]2(NiCl4) discloses a significantly small bite angle of the chelate and interaction of near phenyl rings pertaining to opposite dpdpc moieties. Coordination of dpdpc to cobalt prompts its oxidation to the corresponding P,P′-dioxide.
