Rates and isotope effects in the proton transfers from 2-nitropropane to pyridine bases

1967 ◽  
Vol 89 (10) ◽  
pp. 2322-2327 ◽  
Author(s):  
Edward Sheldon. Lewis ◽  
Lance. Funderburk
Keyword(s):  
Isotope Effects ◽  
Pyridine Bases ◽  
Proton Transfers

Reactive mode composition factor analysis of transition states: the case of coupled electron–proton transfers

2019 ◽  
Vol 21 (45) ◽  
pp. 24912-24918 ◽  
Author(s):  
Mauricio Maldonado-Domínguez ◽  
Daniel Bím ◽  
Radek Fučík ◽  
Roman Čurík ◽  
Martin Srnec
Keyword(s):  
Factor Analysis ◽  
Kinetic Energy ◽  
Isotope Effects ◽  
Transition States ◽  
Kinetic Isotope Effects ◽  
Composition Factor ◽  
Kinetic Isotope ◽  
Proton Transfers ◽  
Relative Kinetic ◽  
Reactive Mode

The kinetic energy distribution in the reactive mode in transition states correlates the asynchronicity of CPET with relative kinetic isotope effects.

ChemInform Abstract: KINETICS AND ISOTOPE EFFECTS IN PROTON TRANSFERS FROM 3-BROMO- AND 3-NITRO-(+)-CAMPHOR

1977 ◽  
Vol 8 (5) ◽  
pp. no-no
Author(s):  
R. P. BELL ◽  
S. GRAINGER
Keyword(s):  
Isotope Effects ◽  
Proton Transfers

Kinetic hydrogen isotope effects in the ionization of some carbon acids

1970 ◽  
Vol 318 (1535) ◽  
pp. 421-440 ◽  
Keyword(s):  
Aqueous Solutions ◽  
Rate Constants ◽  
Hydrogen Isotope ◽  
Isotope Effects ◽  
Kinetic Isotope Effects ◽  
Kinetic Isotope ◽  
Pyridine Bases ◽  
Carbon Acids ◽  
Ethyl Nitroacetate ◽  
Basic Strength

Rate constants in aqueous solutions are reported for proton and deuteron abstraction by a variety of bases from tricarbomethoxymethane, the propan-2-one-1-sulphonate ion, 2-acetylcyclohexanone and ethyl nitroacetate. The rates of ionization were measured by using bromine or iodine as scavengers to remove the anions, and, for ethyl nitroacetate by direct observation of the rate of appearance of the anion. The kinetic isotope effects vary from k H / k D = 2.5 to k H / k D = 10.3, and confirm the regularities previously found (Bell & Crooks 1965; Bell & Goodall 1966). In particular, the results for the reaction of ethyl nitro-acetate with nine bases show clearly that with increasing basic strength the isotope effect passes through a well-marked maximum. Sterically hindered pyridine bases give rise to abnormally high isotope effects, probably attributable to increased tunnel corrections.

Kinetic Isotope Effects on Metal to Nitrogen Proton Transfers

1995 ◽  
Vol 34 (26) ◽  
pp. 6497-6504 ◽  
Author(s):  
Kjell-Tore Smith ◽  
Mats Tilset ◽  
S. Soley Kristjansdottir ◽  
Jack R. Norton
Keyword(s):  
Isotope Effects ◽  
Kinetic Isotope Effects ◽  
Kinetic Isotope ◽  
Proton Transfers

Trajectories of proton transfer reactions. Experimental determination of the magnitude of primary deuterium isotope effects for proton-transfers occuring at acute angles

1988 ◽  
Vol 110 (8) ◽  
pp. 2667-2668 ◽  
Author(s):  
Dennis. Liotta ◽  
Manohar. Saindane ◽  
Liladhar. Waykole ◽  
Julie. Stephens ◽  
Judy. Grossman
Keyword(s):  
Proton Transfer ◽  
Experimental Determination ◽  
Isotope Effects ◽  
Transfer Reactions ◽  
Proton Transfers ◽  
Proton Transfer Reactions ◽  
Deuterium Isotope Effects

Kinetics and isotope effects in proton transfers from 3-bromo- and 3-nitro-(+)-camphor

1976 ◽  
pp. 1606 ◽  
Author(s):  
Ronald P. Bell ◽  
Stephen Grainger
Keyword(s):  
Isotope Effects ◽  
Proton Transfers
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