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Issue 9, 2012
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Mono- and dinuclear ruthenium(II) 1,6,7,12-tetraazaperylene complexes

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Abstract

We report the synthesis of free 1,6,7,12-tetraazaperylene (tape). Tape was obtained from 1,1′-bis-2,7-naphthyridine by potassium promoted cyclization followed by oxidation with air. Mono- and dinuclear ruthenium(II) 1,6,7,12-tetraazaperylene complexes of the general formulas [Ru(L–L)2(tape)](PF6)2, [1](PF6)2–[5](PF6)2, and [{Ru(L–L)2}2(μ-tape)](PF6)4, [6](PF6)4–[10](PF6)4, with{L–L = phen, bpy, dmbpy (4,4′-dimethyl-2,2′-bipyridine), dtbbpy (4,4′-ditertbutyl-2,2′-bipyridine) and tmbpy (4,4′5,5′-tetramethyl-2,2′-bipyridine)}, respectively, were synthesized. The X-ray structures of tape·2CHCl3 and the mononuclear complexes [Ru(bpy)2(tape)](PF6)2·0.5CH3CN·0.5toluene, [Ru(dmbpy)2(tape)](PF6)2·2toluene and [Ru(dtbbpy)2(tape)](PF6)2·3acetone·0.5H2O were solved. The UV-vis absorption spectra and the electrochemical behavior of the ruthenium(II) tape complexes were explored and compared with the data of the analogous dibenzoeilatin (dbneil), 2,2′-bipyrimidine (bpym) and tetrapyrido[3,2-a:2′,3′-c:3′′,2′′-h:2′′′,3′′′-j]phenazin (tpphz) species.

Graphical abstract: Mono- and dinuclear ruthenium(ii) 1,6,7,12-tetraazaperylene complexes

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Publication details

The article was received on 22 Sep 2011, accepted on 22 Nov 2011 and first published on 17 Jan 2012


Article type: Paper
DOI: 10.1039/C2DT11805J
Citation: Dalton Trans., 2012,41, 2788-2797
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    Mono- and dinuclear ruthenium(II) 1,6,7,12-tetraazaperylene complexes

    T. Brietzke, W. Mickler, A. Kelling and H. Holdt, Dalton Trans., 2012, 41, 2788
    DOI: 10.1039/C2DT11805J

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