Photosubstitution reactions of the ruthenium(II) arene complexes Ru(eta/sup 6/-arene)L/sub 3//sup 2 +/ (L = NH/sub 3/ or H/sub 2/O) in aqueous solution

Journal Article · Tue Apr 08 23:00:00 EST 1986 · Inorg. Chem.; (United States)

DOI:https://doi.org/10.1021/ic00228a007· OSTI ID:5895102

Weber, W; Ford, P C

Irradiation of the ruthenium(II) complexes Ru(eta/sup 6/-arene)L/sub 3//sup 2 +/ (arene = benzene, toluene, or isopropyltoluene; L = NH/sub 3/ or H/sub 2/O) in aqueous solution leads in each case to aquation of arene as the only observable photoreaction (Ru(eta/sup 6/-arene)L/sub 3//sup 2 +/ + 3H/sub 2/O ..-->.. Ru(H/sub 2/O)/sub 3/L/sub 3//sup 2 +/ + arene). Quantum yields phi/sub L/ for this process were a function of lambda/sub irr/, relatively low for the irradiation into the lowest energy absorption band but progressively higher at shorter wavelengths. The triammine ion Ru(eta/sup 6/-C/sub 6/H/sub 6/)(NH/sub 3/)/sub 3//sup 2 +/ showed no evidence for amine aquation or for photooxidation to Ru(III). The phi/sub L/ values were found to be nearly independent of whether L = NH/sub 3/ or H/sub 2/O although there are significant spectral differences between these complexes. In contrast, phi/sub L/ was found to be quite responsive to the nature of substituents on the arene ring. The spectral properties and potential mechanisms for arene photosubstitution are discussed.

• Research Organization: Univ. of California, Santa Barbara
• OSTI ID: 5895102
• Journal Information: Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 25:8; ISSN INOCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
AMMONIA
AROMATICS
CHEMISTRY
COMPLEXES
DATA
EXPERIMENTAL DATA
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHOTOCHEMISTRY
RUTHENIUM COMPLEXES
TRANSITION ELEMENT COMPLEXES
WATER