Comparative ligational, optical band gap and biological studies on Cr(III) and Fe(III) complexes of hydrazones derived from 2-hydrazinyl-2-oxo-N-phenylacetamide with both vanillin and O-vanillin

- Comparative studies between H2L1 and H2L2 and their Cr(III) and Fe(III) complexes.
- Theoretical data from DFT calculations support experimental results.
- The free ligands showed a higher antibacterial effect than their Cr(III) and Fe(III) complexes.