Balaji R. Semi- empirical Calculations on structural and electronic properties of B substituted fluoro chloro and bromo tetraphenylporphyrins - Pondichery Dept. of Chemistry, Pondicherry University Nov-2004 - 44p 32cm Subjects--Index Terms: Chemistry: tetraphenylporphyrins, M.Phil Dewey Class. No.: 547.593 / bal