Premium
Polymerization of phenylacetylene catalysed by cyclopentadienylnickel complexes
Author(s) -
Douglas William E.
Publication year - 2001
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/1099-0739(200101)15:1<23::aid-aoc117>3.0.co;2-3
Subject(s) - phenylacetylene , chemistry , nickelocene , substituent , oligomer , polymerization , toluene , photochemistry , polymer chemistry , solvent , catalysis , polymer , organic chemistry , ferrocene , electrode , electrochemistry
A wide range of cyclopentadienylnickel compounds catalyse the reaction of phenylacetylene under solvent‐free conditions, giving a mixture of cyclotrimers, linear oligomers and poly(phenylacetylene). No reaction is observed in the case of internal acetylenes. Cyclotrimer formation is favoured by the presence of cyclopentadienylnickel catalysts bearing a chloro substituent at nickel. A reduction in reaction temperature results in lower conversion but favours linear oligomer and polymer formation. The main effect of the presence of solvent, regardless of whether it is potentially coordinating (toluene) or not ( n ‐octane), is to suppress almost completely reactions catalysed by nickelocene.