1. College of Sciences and Humanities, Fahad Bin Sultan University, P.O. Box 15700, 71454 Tabouk, Kingdom of Saudi Arabia
2. Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, NO-0315 Oslo, Norway
3. Department of Chemistry, University of Bergen, Allégaten 41, NO-5007 Bergen, Norway