Topic
Aquation
About: Aquation is a research topic. Over the lifetime, 1443 publications have been published within this topic receiving 17507 citations.
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TL;DR: In this article, the spectral properties and potential mechanisms for arene photosubstitution are discussed, and the quantum yields 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.
Abstract: 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.
45 citations
TL;DR: Experimental and theoretical studies related to the kinetics of interactions between cisplatin derivatives and DNA are critically reviewed, indicating that hydrogen bonding between platinum leaving groups and DNA residues is not a factor determining the sequence-selective binding to GG and AG sequences.
45 citations
44 citations
44 citations
TL;DR: The hydrogen bond donating capacity of DNA bases to the platinum ligands stabilizes the transition state for monoadduct formation and thus enhances the rate of platination and theoretical investigations suggest a trigonal bipyramidal Transition state for the substitution reactions.
43 citations