1. Department of Chemistry, Baghdad-ul-Jadeed Campus; The Islamia University of Bahawalpur; Bahawalpur 63100 Pakistan
2. Department of Chemistry; Zhejiang University; 38, 310027 Hangzhou P. R. China
3. Department of Chemistry; Balochistan University of Information Technology, Engineering and Management Sciences; Quetta Pakistan
4. Institute of Chemistry; University of the Punjab; 54590 Lahore Pakistan
5. Department of Chemistry; University of Zurich Winterthurerstr; 190, 8057 Zurich Switzerland