UNSPECIFIED (1998) [N-alkyl-(2-pyridyl)methanimine]copper(I) complexes: Characterisation and application as catalysts for atom-transfer polymerisation. EUROPEAN JOURNAL OF INORGANIC CHEMISTRY (11). pp. 1799-1806. ISSN 1434-1948

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Abstract

The synthesis and characterisation of a series of novel bis(imine)copper(I) complexes and their use in atom-transfer polymerisation of methyl methacrylate is described. Several N-alkyl-(2-pyridyl)methanimines (alkyl = n-butyl, isobutyl, sec-butyl, n-propyl) and N-(n-propyl)-1-(2-pyridyl)ethanimine as ligands have been fully characterised. Three bis[N-alkyl-(2-pyridyl)methanimine]copper(I) complexes, [Cu{(C5H4N)CH=N(iBu)}(2)][BF4], [Cu{(C5H4N)C(CH3)=N-(nPr)}(2)][PF6], and [Cu{(C5H4N) CH=N(sBu)}(2)][BF4] have been structurally characterised; all having a distorted tetrahedral arrangement of co-ordinating nitrogen atoms surrounding the metal centre. All of the catalysts were found to be effective atom-transfer polymerisation catalysts for the polymerisation of MMPI in hydrocarbon solution. However, it was discovered that the performance of the catalysts containing n-alkyl substituents was superior to those containing branched alkyl substituents. The presence of branching in the alkyl substituent results in a reduction of reaction rate and a corresponding broadening of the polydispersity index.

Item Type:	Journal Article
Subjects:	Q Science > QD Chemistry
Journal or Publication Title:	EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Publisher:	WILEY-V C H VERLAG GMBH
ISSN:	1434-1948
Date:	November 1998
Number:	11
Number of Pages:	8
Page Range:	pp. 1799-1806
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/15203

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