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An exception to the CIDNP sign rules

✍ Scribed by P.J. Hore; S. Stob; J. Kemmink; R. Kaptein


Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
365 KB
Volume
98
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis


It is demonstrated experimentally that the CIDNP sign rules can give erroneous results. Net effects observed in the 'H NMR spectrum of I-phenyl[2-%]propan-2+ne after photolysis are correctly predicted at 360 MHz but not at 100 hlHz by the rules. The converse is true for the lH-13C multiplet effects. The radical pair theory can account for the CIDNP effects in all cases.


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