a
Department of Chemistry, University of Hull, Hull, UK
E-mail: c.redshaw@hull.ac.uk
;
Fax: +44 (0) 1482 466410
;
Tel: +44 (0) 44 1482 465219
b
Energy Materials Laboratory, School of Chemistry, University of East Anglia, Norwich, UK
c
Department of Chemistry and Biochemistry, The University of Texas at Austin, Welch Hall 2.204, 105E. 24th St. A5300, Austin, USA