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Long-range proton spin-spin coupling in rigid cyclic structures by 2D NMR/‘through-space coupling’

✍ Scribed by Harald Schröder; Ernst Haslinger

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
328 KB
Volume
32
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

In H,H COSY spectra of rigid cyclic terpenes, many long‐range couplings can be observed. The coupled nuclei are connected either by a zig‐zag coupling path or they are close in space. The latter are called ‘through‐space’ coupling. A certain stereospecific relationship between the coupling partners is necessary. This phenomenon is in accordance with the theoretical explanations.

📜 SIMILAR VOLUMES

Unresolvable long range spin–spin coupli
Unresolvable long range spin–spin coupling as a source of systematic error in proton NMR total bandshape analysis
✍ Torbjörn Drakenberg; Robert E. Carter 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 218 KB

## Abstract Unresolvable long range spin‐spin coupling which is not explicitly taken into account in total NMR bandshape analysis is demonstrated to be a potentially important source of systematic error, leading to Δ__H__^≠^ and δ__S__^≠^ values incorrect by __c__. 1 kcal/mol and 2 to 4 cal/(mol K)