Ground- and excited-state electronic structure of an emissive pyrazine-bridged ruthenium(II) dinuclear complex
Articolo
Data di Pubblicazione:
2005
Citazione:
Ground- and excited-state electronic structure of an emissive pyrazine-bridged ruthenium(II) dinuclear complex / W.R. Browne, N.M. O'Boyle, W. Henry, A.L. Guckian, S. Horn, T. Fett, C.M. O'Connor, M. Duati, L. De Cola, C.G. Coates, K.L. Ronayne, J.J. McGarvey, J.G. Vos. - In: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY. - ISSN 0002-7863. - 127:4(2005), pp. 1229-1241. [10.1021/ja046034e]
Abstract:
The synthesis, characterization, and electrochemical, photophysical, and photochemical properties of the binuclear compounds [(Ru(H8-bpy) 2)2((Metr)2Pz)](PF6)2 (1) and [(Ru(D8-bpy)2)2((Metr)2Pz)] (PF6)2 (2), where bpy is 2,2′-bipyridine and H 2(Metr)2Pz is the planar ligand 2,5-bis(5′-methyl- 4′H-[1,2,4]triaz-3′-yl)-pyrazine, are reported. Electrochemical and spectro-electrochemical investigations indicate that the ground-state interaction between each metal center is predominantly electrostatic and in the mixed-valence form only a low level of ground-state delocalization is present. Resonance Raman, transient, and time-resolved spectroscopies enable a detailed assignment to be made of the excited-state photophysical properties of the complexes. Deuteriation is employed to both facilitate spectroscopic characterization and investigate the nature of the lowest excited states.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
resonance raman-spectra; effective core potentials; mixed-valence complexes; metal-metal interactions; electrochemical properties; intervalence-transfer;photophysical properties; charge-transfer; molecular calculations; nonradiative decay
Elenco autori:
W.R. Browne, N.M. O'Boyle, W. Henry, A.L. Guckian, S. Horn, T. Fett, C.M. O'Connor, M. Duati, L. De Cola, C.G. Coates, K.L. Ronayne, J.J. Mcgarvey, J.G. Vos
Link alla scheda completa: