1. Department of Chemistry and Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, USA
2. Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS, Sibirsky Tract 10/7, Kazan 420029, Russia
3. Department of Physical Sciences and Mathematics, Wayne State College, Wayne, Nebraska 68787, USA
4. Department of Chemistry Brock University, St. Catharines Ontario L2S 3A1, Canada