MOLECULAR AND CRYSTAL STRUCTURE OF IRON(III) AND NICKEL(II) COMPLEXES WITH 1¢-PHTHALAZINYLHYDRAZONES OF HETEROCYCLIC CARBONYL COMPOUNDS
The structures of iron(III) and nickel(II) complexes with the composition [FeL 2]Cl×H 2O ( 1) and [Ni(HL 2')]×DMSO×0.5H 2O ( 2), where L and HL' are monodeprotonated residues of 1'-phthalazinylhydrazones of 2-acetyl benzimidazole and 1-phenyl-3-methyl-4-formyl-5-hydroxypyrazole respectively, are determined using single crystal X-ray diffraction analysis. Both compounds crystallize in the monoclinic symmetry. The Fe(III) and Ni(II) ions in the complexes have octahedral N 6 and N 4O 2 donor environments respectively. Due to intermolecular hydrogen bonds, the molecules of the complexes form corrugated (complex 1) and linear (complex 2) molecular chains in the crystal.