Summary
Acetylacetone bis-benzoylhydrazone (PhCONHN=CMe)2 CH2(LH2) and acetylacetone bis-isonicotinoylhydrazone (NC5H4CONHN=CMe)2CH2(L′H2) complexes of the types [ML] and [ML′] (M = CoII, NiII, CuII or ZnII) have been prepared and characterized. All the complexes are non-electrolytes and the cobalt(II) complexes are lowspin, the nickel(II) complexes are diamagnetic and the copper(II) complexes are paramagnetic. The ligands chelate via two C=N groups and two deprotonated enolate groups. The e.s.r. spectra of the copper(II) complexes indicate a tetragonally distorted dimeric structure. The X-ray diffraction parameters for [CoL] and [NiL′] correspond to a tetragonal crystal lattice.
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Narang, K.K., Singh, V.P. Synthesis and characterization of cobalt(II), nickel(II), copper(II) and zinc(II) complexes with acetylacetone bis-benzoylhydrazone and acetylacetone bis-isonicotinoylhydrazone. Transition Met Chem 18, 287–290 (1993). https://doi.org/10.1007/BF00207948
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DOI: https://doi.org/10.1007/BF00207948