443643-19-4Relevant articles and documents
Synthesis, spectroscopic and electrochemical properties of mononuclear and dinuclear bis(bipy)ruthenium(II) complexes containing dimethoxyphenyl(pyridin-2-yl)-1,2,4-triazole ligands
Passaniti, Paolo,Browne, Wesley R.,Lynch, Fiona C.,Hughes, Donal,Nieuwenhuyzen, Mark,James, Paraic,Maestri, Mauro,Vos, Johannes G.
, p. 1740 - 1746 (2007/10/03)
The ligands HL1 and H2L2 and the complexes [Ru(bipy)2L1]PF6·2H2O 1, [(Ru(bipy)2)2L2](PF6)2·7H 2O 2, { where HL1 = 3-(2′,5′-dimethoxyphenyl)-5-(pyridin-2″-yl)-1 H-1,2,4-triazole, H2L2 = 1,4-bis(5′-(pyridin-2″-yl)- 1′H-1′,2′,4′-triazol-3′-yl)-2,5-dimethoxybenzene and bipy = 2,2′-bipyridyl}, have been prepared and characterised, by NMR, UV-vis and emission spectroscopies and by electrochemical measurements. X-Ray crystal structures of ligands HL1, H2L2 and of the complex 1 are also reported. The dinuclear complex (2) exhibits a weak electronic interaction between the metal centres, which is modulated by the protonation state of the 1,2,4-triazole rings. The extent of the metal-metal interaction in these systems is compared with that observed in other pyridyl-1,2,4-triazole based dinuclear compounds of differing metal-metal distances.
