Synthesis, characterization and antimicrobial screening of Fe (II) and Co (II) metal complexes with 2-thenoyltrifluoroacetone and 2,4-dinitrophenylhydrazine

Abstract

Iron (II) and Cobalt (II) complexes were derived from 2-thenoyltrifluoroacetone and 2,4 dinitrophenylhydrazine. The synthesized complexes were characterized by IR and UV-Vis spectral methods. The decomposition temperature ranges from 390-375 oC and 301-291 oC for Iron and Cobalt respectively. The conductivity of 0.5bvn88 μS/cm for Iron and 0.684 μS/cm for Cobalt were obtained. The solubility test of both complexes conducted were found to be soluble in acetone, slightly soluble in dinitroethane, 1-propanol, 2-propanol, methanol and ethanol while insoluble in n-hexane and distilled water. The IR spectra observed for both Iron and Cobalt complexes are 3379 cm-1(N-H), 3096 cm-1(C-H), 2344 cm-1(C-H), 1611 cm-1(C=C), 1640 cm-1(N-H), 1540 cm-1(C-H), 1019 cm-1(N-M), 937 cm-1(M-O), 734 cm-1(C-F), 1257 cm-1(C-O) and 3478 cm-1(N-H), 3089 cm-1(C-H), 2113 cm-1(C-H), 1599 cm-1(C=C), 1655 cm-1(N-H), 1544 cm-1(C-H), 992 cm-1(N-M), 836 cm-1(M-O), 743 cm-1(C-F) and 1134 cm-1(C-O) respectively. The complexes have been tested for their antimicrobial screening against bacteria (E. coli). The antimicrobial screening of the complexes was determined in Nutrient Agar Media. Both complexes demonstrate their antibacterial activity, in which not only minimum inhibition zone shown but the complexes dried out the bacteria on all the plates.