✦ LIBER ✦

Synthesis, characterization and cyclic voltammetric studies of ruthenium oximates

✍ Scribed by Natun Ghatak; Samaresh Bhattacharya

Publisher: Springer
Year: 1996
Tongue: English
Weight: 485 KB
Volume: 21
Category: Article
ISSN: 0340-4285
DOI: 10.1007/bf00140784

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✦ Synopsis

Using 1,2-naphthoquinone-1-oxime (HL) as the principal ligand, four mixed-ligand ruthenium oximate complexes -namely [Ru(bipy)2(L)]C104, [Ru(pap)a(L)]-C10 4, [Ru(bipy)(L)2 ] and [Ru(PPh3)2(L)2 ], where bipy = 2,2'-bipyridine and pap = 2-(phenylazo)pyridinehave been synthesized and characterized. In all these complexes, Ru exists in the + 2 state. They are diamagnetic and, in solution, show several intense metal-toligand charge transfer (MLCT) transitions in the vis. region. In MeCN solution, all four complexes show a reversible Run-Ru m oxidation on the positive side of a standard calomel electrode (s.c.e.), the potential of which varies with the compositions of the complexes. Reductions of the coordinated co-ligands (bipy or pap) are also observed.

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