1. Department of Chemistry & Biochemistry, Hunter College of the City University of New York, New York, NY 10065, USA
2. Department of Chemistry, The Graduate Center of the City University of New York, New York, NY 10016, USA
3. Department of Chemistry and QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal
4. Department of Natural Sciences, LaGuardia Community College of the City University of New York, New York, NY 11101, USA
5. The Rockefeller University, New York, NY 10065, USA
6. Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal