## Abstract Several α,β‐diphosphonates with a norbornane or cyclohexane skeleton were prepared, and the ^31^P‐^31^P coupling constants over three bonds for the ethyl or methyl esters, the acid and anion were obtained from the ^13^C NMR spectra or the ^13^C satellites in the ^31^P NMR spectra. The ^
Concerning the angular dependence of the Vicinal31P1H coupling constants of phosphonate and of hydroxy-phosphonate derivatives
✍ Scribed by L. Evelyn; L. D. Hall; P. R. Steiner; D. H. Stokes
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- English
- Weight
- 442 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
A series of organic phosphonate and hydroxy‐phosphonate derivatives have been synthesised and their NMR spectra fully analysed. The vicinal ^31^P^1^H coupling constants of these derivatives give evidence of a regular angular dependence.
📜 SIMILAR VOLUMES
A theoretical study is presented of the dependence on the hydroxymethyl group conformation of vicinal carbon-proton coupling constant 3Jc, n in a series of 16 hexopyranoses. Calculated 3Jc, H values for both anomers of o-glucopyranose (1), D-mannopyranose (2), D-allopyranose (3), D-altropyranose (4)
## Abstract Two‐bond ^13^C^13^C coupling constants are discussed on the basis of INDO‐SCPT calculations. The dependence of ^2^__J__(CC) on bond angle variation and on methyl substitution is evaluated, and it is shown that ^2^__J__(CC) depends linearly on the bond orbital __s__‐character product of