Some Transition Metal Complexes Derived from the Heterocyclic Ligands 3-Methyl-4-Arylazopyrazole-5-Ones

Chemistry Department, Lucknow University, Lucknow

Manuscript received 8 August 1980, revised 14 July 1981, accepted 11 August 1981

Some planar and octahedral complexes of the sulphates of Co(II) and Ni(II) with different 3-methyl-4-arylazo pyrazole-5-ones have been prepared. The complexes contain only one molecule of the ligand which functions as a bidentate donar coordinating through its carbonyl and azo group while the rest of the positions in the coordination geometry of metal are occupied by water molecules. The magnetic and electronic data of the complex­es are discussed in the light of structures assigned.