## Abstract Various isatin–N‐Mannich bases have shown antiviral and tuberculosatic activity. A reaction of 3‐hydrazonoindolin‐2‐one was performed efficiently with morpholine in the presence of formaldehyde. Kinetic studies have revealed no reaction between 3‐hydrazonoindolin‐2‐one and morpholine in
Kinetic and thermodynamic study of thiolato and sulfenato Co(III) complexes in water–acetonitrile mixtures
✍ Scribed by Monika Aranyosiová; Ján Benko; Ol'Ga Vollárová
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 102 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0538-8066
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✦ Synopsis
Rate constants are reported for peroxodisulfate as well as periodate oxidation of [Co(en) 2 {SCH 2 CH(COO)NH 2 }] + , [Co(en) 2 (SCH 2 CH 2 NH 2 )] 2+ , and [Co(en) 2 (SOCH 2 CH 2 NH 2 )] 2+ in water-acetonitrile mixtures. The dependence of rate constants on the acetonitrile concentration is established and discussed. Ancillary information relevant to solvation of reactants has been obtained from solvatochromism and from Gibbs transfer functions. The solvent effect is discussed from the viewpoint of change in solvation of initial and transition state on going from water to water-acetonitrile mixtures.
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The rate constant of formation, dissociation, and redox reaction of the benzyl radicalcopper(I1) ion complex have been determined at temperatures from 274 K to 333 K by laser flash photolysis of 1,3-diphenyl-2-propanone (DBK) in a 10% acetonitrile-90% water mixture containing copper(I1)perchlorate.
## Abstract Kinetics and solvent effects of the aquation of trans[Co(4‐(Etpy)~4~Cl~2~]^+^ have been studied in ethanol + water ranging from 0 to 60% (v/v) and urea + water of various solvent compositions up to 40% (w/w) of organic solvent. Thermodynamic activation parameters were computed and discu