Synthesis, Characterization, Dehydration, Solid State Conductance and Biological Activity of Chromium(III) Benzoyl Hydrazin E Azide/ Sulphate Complexes

Abstract

Abstract A series of chromium(IIl) benzoyl hydrazine a zide/sulphate complexes of the type Cr(BH)x(N3)y(SO4)3y.6H2O where BH = benzoyl-hydrazine, C6H5CONHNH2, and x, y = 1–3 have been prepared and characterized by elemental analyses, weight loss, IR and electronic spectra, solution and solid state conductance and magnetic suscepti data. The complexes are paramagnetic and have octahedral stereochemistry with BH bonds to Cr(III) through >C=O and -NH2 groups. N3 − and SO4 − groups are ionically associated. Dehydration studies show stepwise elimination of water molecules. The molar conductance values of some of the complexes are low. Solid state conductance between 1.4 × 10−8 to 18.16 × 10−8 (ohm cm)−1 varying with the number of N3 − groups and frequency, indicates a semiconducting nature of the complexes at room temperature. BH, NaN3, K2SO4Cr2(SO4).24H2O and four of Cr(III) complexes were screened against Synechococcus cedrorum, e unicellular non-nitrogen fixing, mesophilic blue green alga, and have shown si...