Kinetic isotope effect in the phototransfer of a proton in ion pairs of aromatic amines

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · High Energy Chem. (Engl. Transl.); (United States)

OSTI ID:5629563

Ivanova, L L; Demyashkevich, A B; Kuz'min, M G

The kinetic isotope effect in the phototransfer of a proton in ion pairs with a hydrogen bond, formed by aromatic amines with acids and butyronitrile, has been investigated. It is shown that in the case of deuterated acids the reaction is retarded and the isotope effect (k/sub 1/H/K/sub 1/D) lies between 1.3 and 4.5. The value of the isotope effect is close to the quasiclassical value and the pre-exponential factors of the reaction in the case of isotope substituation remain practically the same. It has been concluded that in the investigated systems the phototransfer of the proton proceeds according to an activation mechanism and the coordinate of the reaction represents the transfer of the proton via the hydrogen bond.

• Research Organization: M.V. Lomonosov Moscow State Univ.
• OSTI ID: 5629563
• Journal Information: High Energy Chem. (Engl. Transl.); (United States), Journal Name: High Energy Chem. (Engl. Transl.); (United States) Vol. 19:2; ISSN HIECA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400302* -- Organic Chemistry-- Isotope Effects-- (-1987)
400303 -- Organic Chemistry-- Isotope Exchange & Isotope Separation-- (-1987)
400500 -- Photochemistry
AMINES
AROMATICS
BARYONS
CHEMICAL BONDS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DEUTERATION
ELEMENTARY PARTICLES
FERMIONS
FLUORESCENCE
HADRONS
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
HYDROGEN TRANSFER
INORGANIC ACIDS
ION PAIRS
ISOTOPE EFFECTS
ISOTOPES
ISOTOPIC EXCHANGE
KINETICS
LUMINESCENCE
NUCLEONS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PHOSPHORIC ACID
PHOTOCHEMICAL REACTIONS
PROTONS
REACTION KINETICS