1. Department of Chemistry and Biochemistry, California State University Northridge, 18111 Nordhoff St., Northridge, CA 91330-8262, USA
2. Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
3. Center for Integrative Petroleum Research, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Kingdom of Saudi Arabia
4. Research & Advanced Engineering, Ford Motor Company, Dearborn, MI 48121-2053, USA