1005-21-6Relevant academic research and scientific papers
Formation of a cationic alkylidene complex via formal hydride abstraction: Synthesis and structural characterization of [W(PMe3) 4(η2-CHPMe2)H]X (X = Br, I)
Sattler, Aaron,Parkin, Gerard
supporting information; experimental part, p. 12828 - 12830 (2012/01/13)
W(PMe3)4(η2-CH2PMe 2)H reacts with aryl halides to give the alkylidene complex, [W(PMe3)4(η2-CHPMe2)H] +, which reacts with LiAlD4 to give selectively W(PMe 3)4(η2-CHDPMe2)H, in which the deuterium resides in the methylene group; subsequent migration of deuterium from the methylene group provides a means to measure the rate constant for the formation of the 16-electron species [W(PMe3)5] from W(PMe3)4(η2-CH2PMe 2)H.
Phosphinocyclopentadienide via Cyclopentadienylphosphide
Schmidpeter, Alfred,Zirzow, Karl-Heinz
, p. 977 - 983 (2007/10/02)
Lithiumorganyls RLi (R = Me, Bu, Ph) add to (PhP)5 in successive degradation and disproportionation equilibria depending on the ratio of the reactants.At -70 deg C (R = Me) disproportionation is blocked and (PhP)4R(-) and (PhP)3R(-) can be detected.With excess RLi monophosphides PhPR(-) are formed.CpNa with the help of a crown ether degrades (PhP)5 or substitutes cyanide from PhPCN(-) to give an equilibrium mixture of (PhP)nCp(-) anions, which stabilize by proton shifts: In case of n = 1 and 2 a shift from the Cp unit to the terminal phosphorus results in the formation of the phenylphosphino- and diphenyldiphosphino-cyclopentadienide anion, in case of n = 3 two proton shifts within the Cp unit result in a cyclopenteno-1,2,3-triphospholene allylic anion. - Keywords: Cyclophosphane, Cyclopentadienide, Nucleophilic Degradation, 31P NMR Spectra
