Synthesis, Crystal Structure, DNA Binding, Antibacterial, and Cytotoxic Activities of Two Chiral Copper(II) Complexes

Two chiral copper-(II) complexes [Cu(L)(2)Cl]Cl (1) and [Cu(L)(2)Br]Br (2) [L = N-[(pyridin-2-ylmethylene)imino]dehydroabietylamine} have been synthesized and fully characterized. The coordination geometry of the Cu-II ions in 1 and 2 can be described as an intermediate between squarepyramidal and trigonal-bipyramidal. DNA binding studies suggest that the complexes interact with salmon-sperm DNA. through intercalation, and 2 exhibits a higher binding affinity. The new complexes were screened for their antibacterial and cytotoxic ability. They have similar cytotoxic activity and they represent the first rosin-derivative-based simple Schiff base complexes with strong anticancer potential.