Chemically
Induced Dynamic
Nuclear Polarization
is a commonly utilized technique to indicate the existence of a radical
pair intermediate produced during a chemical reaction.
References:
J. Bargon, H. Fischer and U. Johnson,
Z. Naturforsch. A 1967, 22, 1551-1555.
H. R. Ward and R. G. Lawler, J. Am.
Chem. Soc. 1967, 89, 5518-5519.
R. Kaptein, Adv. Free Radical Chem.
1975, 5, 319-380.
G. L. Closs, R. J. Miller and O. D. Redwine,
Acc. Chem. Res. 1985, 18, 196-202.
P. J. Hore and R. W. Broadhurst, Prog.
NMR Spectroc. 1993, 25, 345-402.
M. Goez, Concepts Magn. Spec. 1995,
7, 263-279; ibid. 137-152.