1. CQC-IMS, Department of Chemistry, University of Coimbra, P-3004-535 Coimbra, Portugal
2. Centro de Química Estrutural-IMS, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
3. CFisUC, Department of Physics, University of Coimbra, P-3004-516 Coimbra, Portugal
4. Faculty Sciences and Letters, Department of Physics, Istanbul Kultur University, Bakirkoy, 34158 Istanbul, Turkey