132963-24-7Relevant academic research and scientific papers
Stepwise reduction of a phosphaalkyne P≡C bond to a phosphaalkene and a phosphine at the FeH(dppe)2 centre. Crystal and molecular structure of the η1-co-ordinated phosphaalkyne complex trans-[FeH(η1-P≡CBut)(dppe) 2][BPh4]
Meidine, Mohamed F.,Lemos, Maria Amelia N. D. A.,Pombeiro, Armando J. L.,Nixon, John F.,Hitchcock, Peter B.
, p. 3319 - 3323 (2007/10/03)
Treatment of trans-[FeH(Cl)(dppe)2] 1 (dppe = Ph2PCH2CH2PPh2) in thf with P≡CBut, in the presence of Tl[BF4], gave the η1-co-ordinated phosphaalkyne complex trans-[FeH(η1-P≡CBut)(dppe)2][BF 4] 2a which forms trans-[FeH(η1-P≡CBut)(dppe) 2][BPh4] 2b on reaction with Na[BPh4] or, upon reaction with HBF4 in CH2Cl2, converts into the η1-fluorophosphaalkene and the difluorophosphine complexes trans-[FeH(η1-PF=CHBut)(dppe)2]A (A = BF4 3a or FeCl2F2 3b) and trans-[FeH(PF2CH2But)(dppe) 2][BF4] 4, respectively. The phosphine complex trans-[FeH(PH3)(dppe)2][BF4] 5a was also formed in a reaction of 1 with P≡CBut in the presence of Tl[BF4] and [NH4][BF4] and converts into trans-[FeH(PH3)(dppe)2][BPh4] 5b upon treatment with Na[BPh4]. A single crystal structural study of 2b showed that a shortening of the P≡C triple bond from 1.542(2) to 1.512(5) A results upon η1 co-ordination of the phosphaalkyne, which represents the shortest P-C bond so far reported. The electrochemical PL ligand parameter has been estimated for η1-P≡CBut and its net electron donor/acceptor ability is compared with those of related unsaturated ligands.
Synthesis of the η1-phosphaalkyne complex trans-CBut)(dppe)2> and its conversion into a η1-fluorophosphaalkene complex. Crystal structure of trans-t)(dppe)2>
Hitchcock, Peter B.,Lemos, M. Amelia N. D. A.,Meidine, Mohamed F.,Nixon, John F.,Pombeiro, Armando J. L.
, p. C23 - C26 (2007/10/02)
The first example of the transformation of an η1-ligated phosphaalkyne metal complex to an η1-phospaalkene complex is reported.
