𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A new technique for the exact determination of 13C1H spin-spin coupling constants

✍ Scribed by Harald Günther; Horst Seel; Hans Schmickler


Publisher
Elsevier Science
Year
1977
Weight
188 KB
Volume
28
Category
Article
ISSN
0022-2364

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


13C, 1H spin coupling constants of dimet
✍ Kikuko Hayamizu; Osamu Yamamoto 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 171 KB

## Abstract ^13^C, ^1^H spin coupling constants of dimethylacetylene have been determined by the complete analysis of the proton coupled ^13^C NMR spectrum. For the methyl carbon ^1^__J__(CH) = + 130.6~4~ Hz and ^4^__J__(CH) = + 1.5~8~ Hz, and for the acetylenic carbon ^2^__J__(CH) = − 10.34 Hz and

Effect of the orientation of an α-substi
✍ Aart A. van Beuzekom; Frank A. A. M. de Leeuw; Cornelis Altona 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 708 KB

## Abstract The magnitude of the NMR spin‐spin coupling constant, ^3^__J__(CH), between a vicinal ^13^C–^1^H pair depends, __inter alia__, on the value of the torsion angle Φ~CH~(^13^CCCH) and is influenced by the presence of an electronegative substituent located on the coupling ^13^C nucleus.

A selective pulse sequence for the deter
✍ M. Findeisen; S. Berger 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 140 KB 👁 1 views

## Abstract A new pulse sequence for determining scalar long range C,H spin couplings in small organic molecules is proposed. It is based on the combination of a selective __J__‐resolved spectrum with a selective HMBC and displays the long‐range spin couplings of one chosen carbon atom in the indir

Application of MNDO Approximation to the
✍ Roberta Musio; Oronzo Sciacovelli 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 246 KB 👁 2 views

Theoretical calculations performed using the coupled Hartree-Fock perturbation theory (CHFPT) show that the MNDO approximation is superior to INDO and MIND03 in computing nuclear spin coupling constants between directly bonded carbon and hydrogen in polysubstituted methanes, HCXYZ. The CHFPT-MNDO pr