Radiationless transitions in electron donor–acceptor complexes: Position‐dependent deuterium isotope effects on S1→S0 internal conversion of 1:1 and 2:1 complexes of methyl‐substituted benzenes with tetracyanobenzene

1982 ◽  
Vol 77 (8) ◽  
pp. 3902-3909 ◽  
Author(s):  
B. T. Lim ◽  
S. Okajima ◽  
A. K. Chandra ◽  
E. C. Lim
Keyword(s):  
Electron Donor ◽  
Internal Conversion ◽  
Isotope Effects ◽  
Substituted Benzenes ◽  
Radiationless Transitions ◽  
Donor Acceptor ◽  
Deuterium Isotope Effects

Hydrogen isotope effects in electron donor-acceptor systems

1979 ◽  
Vol 20 (31) ◽  
pp. 2919-2920 ◽  
Author(s):  
F.M. Martens ◽  
J.W. Verhoeven ◽  
Th.J. de Boer
Keyword(s):  
Electron Donor ◽  
Hydrogen Isotope ◽  
Isotope Effects ◽  
Donor Acceptor

Nicotinamide coenzyme regeneration. The rates of some 1,4-dihydropyridine, pyridinium salt, and flavin mononucleotide hydrogen-transfer reactions

1976 ◽  
Vol 54 (19) ◽  
pp. 2974-2980 ◽  
Author(s):  
J. Bryan Jones ◽  
Keith E. Taylor
Keyword(s):  
Hydrogen Transfer ◽  
Isotope Effects ◽  
Pyridinium Salt ◽  
Transfer Reactions ◽  
Flavin Mononucleotide ◽  
Pyridinium Salts ◽  
Significant Extent ◽  
Redox Couples ◽  
Donor Acceptor ◽  
Deuterium Isotope Effects

The rates of H-transfer between various 1,4-dihydropyridines and pyridinium salts (including NADH and NAD+), and from 1,4-dihydropyridines to FMN, have been measured. The reactions are found to be sufficiently slow for H-transfer to be rate-determining to a significant extent when such Systems are applied for nicotinamide coenzyme recycling purposes. The rates of H-transfer parallel the magnitudes of the donor–acceptor redox potential differences (ΔE0′); ΔE0′ values may therefore be used as qualitative guides in formulating and selecting redox couples of NAD/H recycling value. On the basis of deuterium isotope effects, it is concluded that formation of a complex prior to H-transfer is not rate determining for 1,4-dihydropyridine–NAD+ reactions. This behavior is in contrast to that of other model alcohol dehydrogenase Systems.

Internal conversion in 4-substituted 1-naphthylamines. Influence of the electron donor/acceptor substituent character

2000 ◽  
Vol 2 (5) ◽  
pp. 981-991 ◽  
Author(s):  
Kengo Suzuki ◽  
Attila Demeter ◽  
Wolfgang Kühnle ◽  
Erich Tauer ◽  
Klaas A. Zachariasse ◽  
...  
Keyword(s):  
Electron Donor ◽  
Internal Conversion ◽  
Acceptor Substituent ◽  
Donor Acceptor ◽  
Substituted 1
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