Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Thiocyanate complexes electronic spectra

The lowest energy MLCT transition of Ru polypyridyl complexes of the type tris-[Ru(4,4/-dicarboxy-2,2/-bipyridine)3] (1), can be lowered so that it absorbs more in the red region of the visible spectrum by replacing one 4,4/-dicarboxy-2,2/-bipyridine (dcbpy) with two thiocyanate donor ligands [Ru(dcbpy)2(NCS)2] (2). In complex 2, the two 4,4/-dicarboxylic acid 2,2 -bipyridine ligands pull while the two thiocyanate donor ligands push electrons. The oxidation potential of the complex 2 is 0.85 V vs. SCE, which is cathodically shifted significantly (0.65 V vs. SCE) compared to the homoleptic type of complex 1, which shows Ru(III/II) couple at 1.5 V vs. SCE. Thus, the... [Pg.122]

See other pages where Thiocyanate complexes electronic spectra is mentioned: [Pg.57]    [Pg.250]    [Pg.274]    [Pg.246]    [Pg.350]    [Pg.73]    [Pg.516]    [Pg.142]    [Pg.174]    [Pg.156]    [Pg.305]    [Pg.474]   
See also in sourсe #XX -- [ Pg.263 , Pg.264 ]



SEARCH



Thiocyanate complexes

Thiocyanate electronic spectra

© 2024 chempedia.info