a
EaStCHEM School of Chemistry, The University of Edinburgh, West Mains Road, Scotland, UK
E-mail: ebrechin@staffmail.ed.ac.uk
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Fax: +44 (0)131-650-6453
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Tel: +44 (0)131-650-7545
b
Institute of Chemical Sciences, Heriot – Watt University, Riccarton, Scotland, UK
E-mail: S.J.Dalgarno@hw.ac.uk
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Fax: +44 (0)131-451-3180
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Tel: +44 (0)131-451-8025
c
Department of Chemistry, University of Copenhagen, Universitetsparken 5, DenmarkUK