A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II), molecular formula is C20H16Cl2N4Ru. In a Article£¬once mentioned of 15746-57-3, Quality Control of: Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)
Mixed-Ligand Complexes of Ruthenium(II): Factors Governing Binding to DNA
Binding and spectroscopic parameters for a series of mixed-ligand complexes on binding to DNA have been determined.The application of mixed-ligand complexes permits the variation in geometry, size, hydrophobicity, and hydrogen-bonding ability by systematic variation of complex ligands and the determination of how these factors contribute to DNA binding affinity.Ligands employed include 2,2′-bipyridine (bpy), 1,10-phenanthroline (phen), 4,7-diphenylphenanthroline (DIP), 5-nitrophenanthroline (5-NO2-phen), 4,5-diazafluorene-9-one (flone), and 9,10-phenanthrenequinonediimine (phi).Measurements include equilibrium binding isotherms and enantioselectivities associated with binding, the degree of absorption hypochromism and red shift in the ruthenium charge-transfer band, increases in emission intensities and excited-state lifetimes, perturbations in excited-state resonance Raman spectra (which reflect changes in excited-state charge-transfer distributions as a result of binding to DNA), and determinations of helical unwinding.The complexes examined, with the exception of Ru(bpy)32+, all appear to intercalate and surface-bind to DNA, and for those that bind appreciably, enantioselectivity is observed.Based upon the measurements of spectroscopic properties and binding isotherms, the intercalating ability appears to increase over the series bpy<
Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI