1. Department
of Chemistry, University of Guelph, Guelph, Ontario N1G 2W1, Canada
2. CRPP,
UPR 8641, CNRS, F-33600 Pessac, France
3. CRPP,
UPR 8641, University of Bordeaux, F-33600 Pessac, France
4. FreeLance Crystallography, London, Ontario N6J 3J5, Canada
5. ICMCB, UPR
9048, CNRS, F-33600 Pessac, France
6. ICMCB,
UPR
9048, University of Bordeaux, F-33600 Pessac, France