SPECTROSCOPIC AND CONDUCTIVE PROPERTIES OF SOME CHARGE-TRANSFER COMPLEXES OF IODINE

The interaction of iodine with donor bases such as neutral red (NR) an d 1,10-phenanthroiine (Ph) have been studied spectrophotometrically in C2H5OH. The results indicate the formation of 2:3 charge transfer com plexes of the type (base)(2)3I(2). Mass, Raman and H-1 NMR spectra hav e been recorded for each complex. I-3(-) and I-2 species are observed in these complexes. In addition, the d.c. conductivity is measured in the range (300-400) K degrees. The energy gap of the ionic conduction has been calculated. The conduction process is thought to involve iodi de transfer between polyanions.