Research Interests of Dr. Andrew Hughes
Amine functionalised cyclopentadiene ligands
We have developed the synthesis of a number of cyclopentadienyl ligands
bearing alkyl-chains terminated by secondary amine functions. These ligands
coordinate to early transition metals in a 5 electron h5
fashion for the C5H4R fragment together with a 3
electron R2NM metal amide and show a reactivity contrasting
with their 10 electron biscyclopentadienyl analogues. We have been surveying
the reactions of these amine-functionalised ligands, with an aim of understanding
the relationship between amide and cyclopentadienyl ligands, the figures
shows a structural result from this work. We have also chosen to study
the coordination chemistry of these amine functionalised ligands with late
transition metals, with an emphasis on using our bifunctional ligands to
bridge two metal centres, typically with the cyclopentadienyl function
attached to Fe and the amine attached to other metals. Future studies are
likely to involve alkylated cyclopentadienes bearing amine and alcohol
functions, with application to group 3 and 4 metal coordination chemistry.
The catalytic applications of these complexes are also under investigation.
Andrew K. Hughes, Auke Meetsma and Jan H. Teuben, Organometallics,1993,
12,
1936.
Andrew K. Hughes, Sarah M. B. Marsh, Judith A. K. Howard and Peter
S. Ford, J. Organomet. Chem., 1997, 527, 195.
Andrew K. Hughes and Andrew J. Kingsley, J. Chem. Soc., Dalton Trans.,1997,
4139.
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This page last modified 16th May 2001, by Andrew Hughes