Light-induced electron-transfer reactions involving the tris(2,2'-bipyridine)ruthenium dication and related complexes. I. The bis(2,2'-bipyridine)(diethyl 2,2'-bipyridine-4,4'-dicarboxylate)ruthenium dication

Autor:	Whf Sasse, Awh Mau, Anton Launikonis, Oddvar Johansen
Rok vydání:	1980
Předmět:	Reaction mechanism Quenching (fluorescence) Inorganic chemistry chemistry.chemical_element General Chemistry Medicinal chemistry 2 2'-Bipyridine Dication Catalysis Ruthenium Bipyridine chemistry.chemical_compound Reaction rate constant chemistry
Zdroj:	Australian Journal of Chemistry. 33:1643
ISSN:	0004-9425
DOI:	10.1071/ch9801643
Popis:	Irradiation of the bis(2,2'-bipyridine)(diethyl 2,2'-bipyridine-4,4'- dicarboxylate)ruthenium(II) dication (2c) in water, in the presence of ethylenediaminetetraacetic acid, methyl viologen and a platinum catalyst, produces hydrogen at about one-tenth the rate observed with Ru(bpy)32+. This decrease is ascribed to electron withdrawal by the ester group in (2c) and to bimolecular quenching of photo-excited (2c) by water (rate constant 9.3 × 104 1. mol-1 s-1), which follows (in ethanol) Stern-Volmer kinetics (KSV 9.5 x 10-2 1. mol-1).
Databáze:	OpenAIRE
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