102286-39-5Relevant articles and documents
Preparation and reactivity of mononuclear platinum(0) complexes containing a η2-coordinated alkynylphosphine
Bennett, Martin A.,Kwan, Laurence,Rae, A. David,Wenger, Eric,Willis, Anthony C.
, p. 226 - 233 (2007/10/03)
Displacement of ethene from [Pt(η2-C2H4)(dcpe)] by Ph2PC≡CMe gives the monomeric η2-alkynylphosphine complex [Pt(η2-Ph2PC≡CMe)(dcpe)] (5). Reaction of 5 with one equivalent of HCl forms, in benzene, the four-coordinate η1-vinyl-platinum(II) complex [PtCl{C(=CHMe)PPh2}(dcpe)] (6) by regiospecific addition of the proton to the alkyne carbon atom bearing the methyl group. In dichloromethane, reversible dissociation of the chloride ion from 6 takes place and the cation [Pt{C(=CHMe)PPh2-κP,C1}(dcpe)]+ (6′) that contains a three-membered methylenephosphaplatinacycle fragment can be observed. Treatment of complex 5 with methyl iodide results in the formation of a phosphonium salt [Pt{η2-C(=CH2)=CHPPh2Me}(dcpe)] +I-, [8]I, in which the alkynylphosphine has rearranged to the corresponding allene. The alkynylphosphine complex 5 is cleanly oxidised at phosphorus in the presence of sulfur or air to give the corresponding sulfide or oxide [Pt(η2-Ph2P(X)C≡CMe)(dcpe)] (X = S (9), O (10)). Complexes 5, 6, 8, 9 and 10 have been structurally characterised by single-crystal X-ray diffraction analysis.
platinum(0). Reactions with Alkyl, (Trimethylsilyl)methyl, Aryl, Benzyl, and Alkynyl Carbon-Hydrogen Bonds
Hackett, Marifaith,Whitesides, George M.
, p. 1449 - 1462 (2007/10/02)
cis-Hydridoneopentylplatinum(II) (1) reductively eliminates neopentane and generates platinum(0) (2).This bent bis(phosphine)platinum(0) complex was not observed directly; its intermediac