Page 1. Indian Journal of Chemistry Vol. 41 A, April 2002, pp. 780-784 ... VM Naik & NB Mallur* Departmcnt of Chemistry, Karnatak University, Dharwad 580003, India Received l7 September 2001; revised 26 November 2001 ... Page 5. 784 INDIAN J CHEM, SEC A, APR IL 2002 ...