Carbon-13 CIDNP [chemically induced dynamic nuclear polarization] during photolysis of di-tert-butyl ketone in carbon tetrachloride

1975 ◽  
Vol 40 (20) ◽  
pp. 2946-2949 ◽  
Author(s):  
W. B. Moniz ◽  
C. F. Poranski ◽  
S. A. Sojka
Keyword(s):  
Carbon Tetrachloride ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Tert Butyl ◽  
Chemically Induced ◽  
Butyl Ketone

Photoinitiated oxidation of NADH catalyzed by horseradish peroxidase studied by chemically induced dynamic nuclear polarization

2006 ◽  
Vol 55 (7) ◽  
pp. 1132-1136 ◽  
Author(s):  
M. S. Afanasyeva ◽  
P. A. Purtov ◽  
M. B. Taraban ◽  
T. V. Leshina ◽  
C. B. Grissom
Keyword(s):  
Horseradish Peroxidase ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Chemically Induced

Photo-CIDNP Studies of 2-Butanone and 3-Pentanone in Solution

1974 ◽  
Vol 52 (16) ◽  
pp. 2978-2984 ◽  
Author(s):  
Shiv P. Vaish ◽  
Robert D. McAlpine ◽  
Michael Cocivera
Keyword(s):  
Electron Spin Resonance ◽  
Carbon Tetrachloride ◽  
Excited States ◽  
Nuclear Polarization ◽  
Radical Reactions ◽  
Electron Spin Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
Chemically Induced ◽  
Spin Resonance ◽  
Spin Polarized

The results of photolysis of 2-butanone and 3-pentanone as studied by chemically induced dynamic nuclear polarization (CIDNP) and electron spin resonance spectroscopy (e.s.r.) are reported. In aqueous solutions and t-butanol only the ethyl radical is detected by means of e.s.r., indicating α cleavage to be a major path involving excited states. This observation is further supported by the n.m.r. spectra which are obtained during irradiation of these ketones in D2O and a mixture of CD3CN–D2O (1:1 by volume) containing carbon tetrachloride. Several compounds are detected with their protons spin polarized. A mechanism involving radical reactions is proposed which is consistent with the experimental results.

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