A t3C isotopic effect wasdetected in the triplet sensitized photolysis of dibenzoyl peroxide. Analysis of 13C NXR spectra shows that the amount of 13C in position 1 of phenyl benzoate, the cage product, increases by 23 f 5% in comparison with natural abundance. The observed isotopic effect considera
29Si magnetic isotope effects in the photolysis of silyl ketones
โ Scribed by E.N. Step; V.F. Tarasov; A.L. Buchachenko
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 339 KB
- Volume
- 144
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
Silicon isotope selection induced by magnetic isotope effects has been discovered in the photolysis of a silyl-containing ketone, PhCH,COSi( CH,),Ph. Silicon and carbon atom isotope selection occurs most effkiently when the photolysis is directed via the triplet radical-pair mechanism. This conclusion is supported by CIDNP data.
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