1. Computational and Bio-Simulation Research Group, University of Calabar, Calabar540221, Nigeria
2. Department of Chemistry, Faculty of Science, University of Ibadan, Ibadan200005, Nigeria
3. Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar, Calabar540221, Nigeria
4. School of Chemistry, University of St Andrews, St AndrewsKY16 9ST, Scotland
5. Department of Chemical Sciences, University of Johannesburg, Johannesburg2006, South-Africa
6. School of Chemistry, College of Science, University of Tehran, Tehran14176, Iran