1-crotonyl-2,4-diaza-1,3-butanedione metal complexes: Synthesis and spectroscopic investigations

The iron(II), cobalt(II), nickel(II), copper(II) and zinc(LI) complexes of 1-crotonyl-2,4-diaza-1,3-butanedione (cru) have been prepared. They have be en characterized by elemental analyses, conductance, room temperature magne tic susceptibility, infrared, electronic, H-1 and C-13 NMR spectral data. B ased on the analytical data, the stoichiometry of the complexes is 1.2. The conductivity shows that all of these complexes are non-electrolytes. The s tudies indicate that the geometry around the metal ion of the complexes is octahedral.