DNA Interaction Studies of a Cobalt(II) Mixed-Ligand Complex Containing Two Intercalating Ligands: 4,7-Dimethyl-1, 10-Phenanthroline and Dipyrido[3,2-a:𝟐^′,𝟑^′-c]phenazine

Table 1

Absorption spectra (𝜆_max/nm) and DNA-binding constants, 𝐾_𝑏, of the titled complex in comparison with the previous results.

Complex	𝜆max (free)	𝜆max (bound)	Δ𝜆 (nm)	𝐻 (%)	𝐾𝑏 (M^−1)
[Co(dppz)2(2,9-Me2phen)]	422	458	36	22.5	4.63 × 10^6
[Co(dppz)2(4,7-Me2phen)]	422	460	38	27.7	2.36 × 10^6