84601-65-0Relevant academic research and scientific papers
Some Reactions of Tris(Triphenylphosphine)-dicarbonyliron(0)
Vancheesan, S.
, p. 579 - 582 (2007/10/02)
Tris(triphenylphosphine)-dicarbonyliron(0) (I) undergoes substitution reactions with trimethylphosphite, pyridine, dimethyl sulphoxide and methylisocyanide.Substitution takes place via dissociation of I to a coordinatively unsaturated 16 electron complex, which is a highly reactive unstable intermediate.Both steric and electronic factors play a prominent role in deciding the feasibility of the reaction.Steric factor is expressed in terms of τ, the cone angle of the ligand, and electronic factor in terms of A1 mode of CO stretching frequency in Ni(CO)3L, where L is ligand for which the electronic factor is expressed in terms of νCO.Ligands with cone angle τ, greater than that of triphenylphosphine e.g. t-butylphosphine, do not react.In the reaction of I with molecular hydrogen and bromine, oxidative addition takes place.Diphenylacetylene forms two isomers, whereas carbon disulphide forms a ?-complex on reaction with I.
