## Abstract A series of 7‐^13^C‐labeled __o__‐substituted toluene derivatives and carboxyl‐^13^C‐isocrotonic and crotonic acid were synthesized and studied by ^13^C NMR spectroscopy to obtain ^13^C^13^C spin‐spin coupling constants involving the labeled carbon. The __cis__ ^3^__J__(CC) values were
One-bond 13C13C spin–spin coupling in cubanes
✍ Scribed by T. Axenrod; B. Liang; A. Bashir-Hashemi; P. R. Dave
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 102 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
Endocyclic one‐bond ^13^C^13^C spin–spin coupling constants in a series of cubane derivatives were recorded. The values measured using the INADEQUATE pulse sequence were found to be insensitive to the nature of the substituent, fall in a narrow range (27–30 Hz) and are comparable to values reported for similar cyclobutane derivatives.
📜 SIMILAR VOLUMES
## Abstract The synthesis of six 1‐X‐ (X = OH, OCH~3~, OCOCH~3~, CH~3~, CHO and CN) phenanthrene derivatives with a ^13^C label at C‐1 is described. An analysis of the ^13^C^13^C spin coupling constants shows the importance of π‐interaction for the coupling constant transmission. Small ^13^C^13^C s
## Abstract The ^13^C^13^C spin–spin coupling constants in natural abundance oxetane, thietane, cyclobutanone, bromo‐and chlorocyclobutane have been measured. Furthermore, the ^13^C isotope‐induced changes in the chemical shifts of the different ^13^C nuclei in the molecules mentioned above are re
## Abstract A series of alicyclic compounds with dihedral angles of 0°, 60°, 90°, 120° and 180° between a ^13^C‐labelled carbon atom and a carbon atom separated by three bonds from the label has been synthesized. The vicinal ^13^C^13^C spin coupling constants were measured, and from the results a K
## Abstract One‐bond ^13^C, ^13^C‐spin‐coupling constants have been measured, with natural isotope abundance, in η^4^‐diene, η^3^‐allyl and η^2^‐ene transition‐metal carbonyl complexes. Typical values of ^1^__J__(C,C) are given for Fe‐, Ru‐ and Os‐complexes with the three types of olefinic ligands.