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Nuclear Magnetic Resonance Spectroscopy. Ring-Current Effects on Carbon-13 Chemical Shifts

✍ Scribed by Richard Du Vernet and V. Boekelheide

Book ID
123652109
Publisher
National Academy of Sciences
Year
1974
Tongue
English
Weight
621 KB
Volume
71
Category
Article
ISSN
0027-8424

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πŸ“œ SIMILAR VOLUMES

Nuclear magnetic resonance spectroscopy.
Nuclear magnetic resonance spectroscopy. Ring-current effects upon carbon-13 chemical shifts
✍ Ronald H. Levin; John D. Roberts πŸ“‚ Article πŸ“… 1973 πŸ› Elsevier Science 🌐 French βš– 178 KB

Ring currents have played a crucial role in modern chemistry, but they have been analyzzd and discussed almost entirely in terms of their effect upon proton nmr chemical shifts. 2,3 The applica,ion of carbon magnetic resonance spectroscopy to this area has received relatively little attention.

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## Abstract Carbon‐13 chemical shifts of the cyclopropyl carbons of eleven 4‐substituted cyclopropylbenzenes have been measured under conditions effectively corresponding to infinite dilution in DCCI~3~. The substituent‐induced chemical shifts (SCS) of __both__ the Ξ± and Ξ² carbons of the cyclopropa