Abstract
The electronic absorption spectra of ruthenium nitrosyl complexes with nitrogen-containing heterocyclic ligands were analyzed on the basis of ab initio and CINDO/CI semiempirical calculations of free ligands L and complexes trans-[Ru(NO)(NH3)4(L)]3 + (L = pyridine, pyrazine, nicotinamide, isonicotinamide, l-histidine, imidazole). Spectral manifestations of a strong covalent Ru-NO bond were observed to conclude that the oxidation states of Ru and NO in the RuNO3 + group are expedient to represent as Ru(III) and NO0. Introduction of a nitrosyl group into the inner coordination sphere of Ru(II) complexes with nitrogen-containing heterocyclic ligands much affects the entire spectral patterns and denudes these ligands of the capacity to exhibit chromophoric properties.
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Sizova, O.V., Ivanova, N.V., Lyubimova, O.O. et al. Interpretation of the Electronic Spectra of Ruthenium Nitrosyl Complexes with Nitrogen-containing Heterocyclic Ligands. Russian Journal of General Chemistry 74, 155–163 (2004). https://doi.org/10.1023/B:RUGC.0000025492.06274.d8
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DOI: https://doi.org/10.1023/B:RUGC.0000025492.06274.d8