Synthesis, Spectroscopic Studies of Binuclear Ruthenium(II) Carbonyl Thiosemicarba-zone Complexes Containing PPh3/AsPh3 as Co-ligands: DNA Binding/Cleavage

摘要

The ruthenium(II) ferrocenyl heterocyclic thiosemicarbazone complexes of the type [RuCl(CO)(EPh3)]2L (where E = P/As; L = binucleating monobasic tridendate thiosemicarbazone ligand) have been investigated. Strutural features were determined by analytical and spectral techniques. Binding of these complexes with CT-DNA by absorption spectral study indicates that the ruthenium(II) complexes form adducts with DNA and has intrinsic binding constant in the range of 3.3 × 10~4- 1.2×10~5M~(-1). The complexes exhibit a remarkable DNA cleavage activity with CT-DNA in the presence of hydrogen oxide and the cleavage activity depends on dosage.