1. Department
of Physics, and Complex
Adaptive Systems Laboratory, University College Dublin, Belfield, Dublin 4, Ireland
2. Institut für Physikalische
und Theoretische Chemie, Goethe Universität Frankfurt, Max von Laue Str. 7, D-60438 Frankfurt am Main, Germany, and Dipartimento
di Chimica e Farmacia, Universita’ degli Studi di Sassari, Via Vienna 2, 07100 Sassari, Italy
3. Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston,
Massachusetts 02215, United States