1. Department of Fundamental Chemistry, Federal University of Pernambuco, 50740-560 Recife, Brazil
2. Aggeu Magalhães Institute, Oswaldo Cruz Foundation, 50740-465 Recife, Brazil
3. São Carlos Institute of Physics, University of São Paulo, 13563-120 São Carlos, Brazil
4. Department of Chemistry, University of São Paulo, 055508-090 Ribeirão Preto, Brazil
5. Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, 0315 Oslo, Norway