1. Department of Chemistry, Meerut College, Meerut, U.P.-250001, India
2. Department of Physics, Digambar Jain College, Baraut, U.P.-250611, India
3. Department of Chemistry, Janta Vedic College, Baraut, U.P.-250611, India
4. High Pressure and Synchrotron Radiation Physics Divison, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India