𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Isotope effects and H/D scrambling in the fragmentation of labelled propenes

✍ Scribed by A. Y.-K. Lau; B. H. Solka; A. G. Harrison


Publisher
John Wiley and Sons
Year
1974
Tongue
English
Weight
214 KB
Volume
9
Category
Article
ISSN
1076-5174

No coin nor oath required. For personal study only.

✦ Synopsis


The fragmentation reaction [C,(H, D)J+. + [C,(H, D)J+ + (H, D) has been examined in the metastable decomposition region for two pairs of labelled propenes: CH,CD=CH,, CD,CH==CD, and CD,CH=CH,, CH,CD=CD,. The results indicate that complete hydrogen scrambling occurs in the propene molecular ion prior to fragmentation. The isotope effect k,/k, is in the range 2.1 to 3.3.

1


πŸ“œ SIMILAR VOLUMES


13C isotope effects on 1H chemical shift
✍ Mika Tiainen; Hannu Maaheimo; Pasi Soininen; Reino Laatikainen πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 187 KB

## Abstract The one‐ and two‐bond ^13^C isotope shifts, typically βˆ’1.5 to βˆ’2.5 ppb and βˆ’0.7 ppb respectively, in non‐cyclic aliphatic systems and up to βˆ’4.4 ppb and βˆ’1.0 ppb in glucose cause effects that need to be taken into account in the adaptive NMR spectral library‐based quantification of the

Isotopic scrambling in the reported synt
✍ C. C. Lee; F. L. Kung πŸ“‚ Article πŸ“… 1972 πŸ› John Wiley and Sons 🌐 French βš– 138 KB

## The r e c e n t l y r e p o r t e d s y n t h e a i s o f C-3 l a b e l e d dehydro-2-norbornyt and 2-norbornyt d e r i v a t i v e s ( 1 ) was found t o be i n e r r o r . Only about 7 0 % o f t h e " C -l a b e l was l o c a t e d a t C-3, t h e o t h e r 30% b e i n g found a t C-2. One o f t