1. Department of Chemistry, University of Gujrat, Gujrat-50700, Pakistan
2. Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
3. Research Centre for Modelling and Simulations (RCMS), NUST, H-12 Campus, Islamabad, Pakistan
4. Department of Chemistry, Allama Iqbal Open University, Islamabad, Pakistan
5. Anorganische und Analytische Chemie, Universitat Paderborn, Warburgerstr. 100, D-33098, Paderborn, Germany