1. Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, L2S 3A1 St. Catharines, Ontario, Canada
2. Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
3. REQUIMTE-LAQV and Department of Chemistry
and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal