Ruthenium(II) phenylazopyridinearylazoimidazoles: Synthesis, spectral studies and redox properties |
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Authors: | P Byabartta |
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Institution: | (1) Departmento de Quimica Inorganica, The Universidad de Zaragaza, Zaragaza, Spain |
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Abstract: | Tris-chelate complex Ru(Pap)(RAaiR′)2](ClO4)2 (I, II, III/a, b, c) (where RAaiR′ = 1-alkyl-(2-arylazo)imidazole, R = H, Me, Cl (a, b, c); R′ = Me, Et, CH2Ph (I, II, III), and Pap = phenylazopyridine) was prepared by silver assisted synthetic route. IR spectra of the complexes
support Ru-azo nitrogen π-bonding interaction. 1H NMR spectra suggest that there are two types of streochemical orientation of RAaiR′ around ruthenium(II). Cyclic voltammetry
of the complexes shows one metal oxidation Ru(II)/Ru(III) at 1.4–1.5 V and three successive ligand reduction couples at the
negative side of the reference potential in the range from −0.5 to −0.56, −0.7 to −0.8, and from −1.25 to −1.40 V, respectively.
The text was submitted by the author in English. |
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