synthesis, characterization, xrd, magnetic moments, electronic and ir spectra of chromium(III) malondihy dr azide azide/ sulphate complexes

Abstract

Chromium(III) malondihydrazide azide/sulphate complexes of the type Cr(MDH) x(N3)ySO4)3_y.6H20, where x = y = 1–3 and MDH = malondihydrazide, CH2(C0NHNH2)2, have been synthesised and characterized by elemental analyses. All the complexes are insoluble in water and pol ar/non-polar common organic solvents. Electronic spectral and magnetic moment data indicate octahedral stereochemistry around chromium(III) in all complexes. MDH bonding occurs only through the two imino NH groups as indicated by the IR spectra. The azide and sulphate groups are ionically associated. The absence of sharp lines in the XRD patterns of two complexes indicate their micro crystalline character. © 1993, Taylor & Francis Group, LLC. All rights reserved.