1. Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
2. School
of Chemistry and Chemical Engineering, Queens University Belfast, Belfast BT9 5AG, United Kingdom
3. National
High Field NMR Centre, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
4. Department
of Chemistry, Saint Mary’s University, Halifax, Nova Scotia B3H 3C3, Canada