Ruthenium(II) Octaphenylporphyrazine Complexes with Mixed Axial Ligands: Peculiarities of Their Formation and Spectral Properties
✍ Scribed by Sergej Vagin; Ulrich Ziener; Michael Hanack; Pavel A. Stuzhin
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 157 KB
- Volume
- 2004
- Category
- Article
- ISSN
- 1434-1948
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✦ Synopsis
Abstract
A series of new axially bis‐coordinated (octaphenylporphyrazinato)ruthenium(II) complexes {[(Ph~8~Pz)RuL~2~], L = cyclohexyl isocyanide, CyNC, (1b); 4,4′‐bipyridine, bpy, (2c); N‐methylimidazole, CH~3~Im, (3a)} was prepared and characterized. The reaction of the bis‐isocyanide adducts [(Ph~8~Pz)Ru(__t__BuNC)~2~] (1a) or [(Ph~8~Pz)Ru(CyNC)~2~] (1b) with monodentate N‐heterocycles gave, under certain conditions, the mixed‐ligand complexes [(Ph~8~Pz)Ru(Py)(__t__BuNC)] (4a), [(Ph~8~Pz)Ru(Py)(CyNC)] (4b) and [(Ph~8~Pz)Ru(CH~3~Im)(CyNC)] (3b). The reaction of 1a or 1b with an excess of bidentate 4,4′‐bipyridine under the same conditions resulted in the formation of the corresponding dimeric species [(Ph~8~Pz)Ru(__t__BuNC)]~2~(μ‐bpy) (2a) and [(Ph~8~Pz)Ru(CyNC)]~2~(μ‐bpy) (2b) in high yield. The structures of all the complexes were unambiguously proved by ^1^H NMR spectroscopy, and the possibility of their self‐assembly is discussed. All mixed‐ligand compounds were also characterized by UV/Vis and IR spectroscopy, as well as elemental analysis. The ^1^H NMR spectra of these compounds are discussed in detail. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)