1. Département de chimie et biochimie, Université de Moncton, Campus de Moncton, Moncton, NB E1A 3E9, Canada.
2. Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada.
3. Department of Chemistry, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.