Spectral, thermal and electrical characterization of Fe [II] 1,3 diphenyl-2-oximo-1,3 propandione with some heterocyclic bases

ABSTRACT

Iron [II] complexes of the type Fe [II] L2 B2 where L 1,3 diphenyl 12-oximo- 1,3- propandione and B pyridine, thiophene or furane, were synthesized and characterized by IR, DTA and electrical conductivity measurements. The presence of the respective heterocyclic bases help to stabilise the oxidation state of Fe [II] during its interaction with concerned oxime -1,3- diketone. The obtained data suggested the following descending order of relative thermal stability of the concerned adduct complexes. Fe [II] L[2] [Pyridine][2] > Fe [II] L[2] [Furane][2] > Fe [II] L[2] [Thiophene]. Furthermore, both of the thiophene and furane adduct complexes exhibited Semiconducting character in the temperature range 30-130 degree. Fe [II] L[2] [pyridine][2] showed such semiconducting behaviour only up to 90 degree. The calculated values of the activation energy of the electrical conductivity decreased in the following order Fe [II] L[2] [Furane][2] > Fe [II] L[2] [Pyridine][2] > Fe [II] L[2] [Thiophene][2]