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Corresponding authors
a
H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
E-mail:
abdul_hameed8@hotmail.com
Fax: +92-21-3481901
Tel: +92-21-99261701-2
b
Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad, KPK, Pakistan 22060
c
Department of Chemistry, Forman Christian College, A Chartered University, Ferozepur Road, Lahore, Pakistan
d
Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan
e
Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
f
Department of Physical Chemistry, University of Rostock, Dr.-Lorenz-Weg 1, 18059 Rostock, Germany
g
Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan