β Scribed by J.A den Hollander; R Kaptein; P.A.T.M Brand
No coin nor oath required. For personal study only.
Received !O May i-971 : .,. :.. 'CIDNI' @r& photolysis-uf .diisoproPyl ketone is described: In most solvents ClDNP.spectra are in accordance .~.... _: I*.@ diti pair fonnagoq (type I split) from triplet state ketone. In CC4, however, the reaction probably hVo@es cOn@lex fOrnXitiOn of excited singlet state ketone w-&h the solvent, as evidenced by CIDNP and fluqrescencc _' ~_L.~'qtienc&g. ~
π SIMILAR VOLUMES
If spectrometers seem to misbehave, this can be very annoying to the operator and cause him a lot of trouble. It may, however, mark the start of a new episode in Science and initiate a hunt for the explanation of a surprising observation, -possibly even of a new phenomenon, -which in physics may sub
## Abstract The photolysis of symmetric and asymmetric organomercury compounds has been studied by CIDNP. No indications of the existence of RHgΒ· radicals have been found. Depending on the solvent, reactions occur from excited states with different spin multiplicities.
## Abstract Geometric isomerizations of olefins following photoinduced electron transfer (PET) are classified according to the relative energetic positions of the radicalβion pairs and the reactant triplets. Each class exhibits characteristic CIDNP (chemically induced dynamic nuclear polarization)
CJDNP cffccts durmg bcnzoyl peroxide thermolysis have been measured duectly by a pulsed NMR spectrometer in Jaw magnetic fields (OS-120 Oe). It IF shown tilat the traditional technique of the sample "transfer" distorts the real magnetic ticld dcpendsncc of CJDNP.