1. Department of Chemistry, University of Guelph, Guelph, Ontario N1G 2W1, Canada
2. CNRS, CRPP, UPR 8641, F-33600 Pessac,
France
3. Univ. Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France
4. FreeLance Crystallography, 185 Chelsea Avenue, London, Ontario N6J 3J5, Canada
5. Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada