[1] Emerald Hts Coll Women, Dept Chem, Udhagamandalam, Tamil Nadu, India
[2] Kongunadu Polytech Coll, Dept Math, Dindigul, Tamil Nadu, India
[3] King Abdulaziz Univ, Dept Math, Jeddah, Saudi Arabia
[4] Thiruvalluvar Govt Arts Coll, Dept Chem, Rasipuram, Tamil Nadu, India