51649-11-7Relevant articles and documents
Reactions of α-lithiated phosphimines with PhCN; the crystal structure of (tmen)>2 (tmen = Me2NCH2CH2NMe2)
Hitchcock, Peter B.,Lappert, Michael F.,Wang, Zhong-Xia
, p. 1953 - 1956 (2007/10/03)
Treatment of the α-lithiated phosphinimine Li with benzonitrile yielded (via a trimethylsilyl or hydrogen 1,3 C -> N shift) the trimethylsilyliminophosphoranylenamidolithium complex Li (R = Me, R' = SiMe3 1; R = Ph, R' = SiMe3 2; or R = Ph, R' = H 3).Complex 2 was transformed into the corresponding potassium complex 4 by an exchange reaction with KOBut.Crystallisation of 4 from hexane in the presence of Me2NCH2CH2NMe2 (tmen) gave the tmen adduct 5 and a trace of the partially hydrolysed product (tmen)>2 6, which was characterised by a single crystal X-ray diffraction study as a dinuclear complex with each of the two potassium atoms in a different co-ordination environment.Complex 1 or 2 was hydrolysed to form the neutral iminophosphoranylenamine N(SiMe3)C(Ph)C(H)P(R)2N(SiMe3)H 7 or 8, which also showed (1H NMR spectroscopy) the presence of hydrogen bonds.