Metal complexes derived from hydrazoneoxime ligands: III - Synthesis, characterization and electrospray ionization mass spectra of some nickel(II) complexes with aroylhydrazoneoximes

Three types of nickel(II) complexes namely [{Ni(L-R)}2], [Ni(HL-R)2] and [Ni(L-R)HPyr], where H2L-R and HPyr refer to diacetylmonooxime aroylhydrazone and Pyrazole respectively, were prepared and characterized. The molecular and supramolecular structures of [Ni(L-H)HPyr], [Ni(L-CH3O)HPyr] and [Ni(L-Cl)HPyr] were determined by single crystal X-ray analysis.