𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Carbon-13 isotope effect on proton decoupled 13C and 31P n.m.r. spectra of bis(diphenylphosphino)acetylene

✍ Scribed by R. Paasonen; J. Enqvist; M. Karhu; E. Rahkamaa; M. Sundberg; R. Uggla

Publisher
John Wiley and Sons
Year
1978
Tongue
English
Weight
196 KB
Volume
11
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

High resolution proton decoupled ^13^C and ^31^P n.m.r. spectra of bis(diphenylphosphino)acetylene in (CD~3~)~2~SO and CDCl~3~ are analysed as ABX spectra to give the relative chemical shifts of the ^13^C and ^31^P nuclei as well as the spin–spin coupling constants ^3^J(PP) and ^n^J(PC). The differences in ^31^P shieldings are due to secondary ^13^C isotope effects which have been observed to be negligible over more than two bonds.

📜 SIMILAR VOLUMES

Effects of simultaneous 13C1H and 13C11B
Effects of simultaneous 13C1H and 13C11B decoupling on the carbon-13 n.m.r. spectra of some organoboron compounds
✍ M. Mazurek; T. M. Mallard; P. A. J. Gorin 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 English ⚖ 254 KB

## Abstract ^13^C FT n.m.r. spectra were obtained from borates of methyl α‐D‐glucopyranoside, triethylboron, sodium tetraphenylboron and 1‐butaneboronic acid employing a simultaneous ^1^H and ^11^B decoupling network. The effectiveness of the system was evident using the three latter organoboron co

Determination of 3J(31P31P) and 13C31P c
Determination of 3J(31P31P) and 13C31P coupling constants in 1,6-diphosphatriptycene from carbon-13 n.m.r. lone pairs effects on 13C31P couplings
✍ S. Sørensen; H. J. Jakobsen 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 English ⚖ 342 KB

## Abstract The ^31^P^31^P and ^13^C^31^P coupling constants in 1,6‐diphosphatriptycene have been obtained from analysis of its proton decoupled ^13^C n.m.r. spectra. More accurate data, however, resulted from simultaneous analysis of the proton decoupled ^13^C spectra and ^31^P(^13^C) satellite