Halo-substituted thiosemicarbazones and their copper(II), nickel(II) complexes: Detailed spectroscopic characterization and study of antitumour activity against HepG2 human hepatoblastoma cells

- Ni(II) and Cu(II) complexes of halo substituted thiosemicarbazones are synthesized.
- Cu(II) complexes are found to be more efficient antitumour agents.
- Cu(II) complexes are tetragonally distorted.
- All the complexes are mononuclear.