✦ LIBER ✦

Electronegativity and linear electric field effect on γ-anti13C chemical shifts

✍ Scribed by Helmut Duddeck; Md. Rabiul Islam

Publisher: John Wiley and Sons
Year: 1983
Tongue: English
Weight: 219 KB
Volume: 21
Category: Article
ISSN: 0749-1581
DOI: 10.1002/omr.1270211205

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

The evaluation of linear electric field

The evaluation of linear electric field effects on carbon-13 chemical shifts. An example for linear field effects on quaternary carbon atoms

✍ H.-J Schneider; W Freitag; W Gschwendtner; G Maldener 📂 Article 📅 1979 🏛 Elsevier Science ⚖ 193 KB

The role of linear electric field effect

The role of linear electric field effects in halogen induced 13C chemical shifts in cyclohexanes and methylenecyclohexanes

✍ Marianne E. Van Dommelen; Jan W. de Haan; Henk M. Buck 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 297 KB

## Abstract The ^13^C NMR chemical shifts of methylenecyclohexane at low temperature are compared with those of 4‐chloro‐ and 4‐bromo‐methylenecyclohexane under the same conditions. It is concluded that the halogen induced shift differences at the double bond are to be ascribed largely to linear el

Substituent effects on C-13 chemical shi

Substituent effects on C-13 chemical shifts of substituted benzenes. A new proposition of electronegativity correlation of meta-carbon chemical shifts

✍ Naoki Inamoto; Shozo Masuda; Katsumi Tokumaru; Kazuo Tori; Masayuki Yoshida; Yoh 📂 Article 📅 1976 🏛 Elsevier Science 🌐 French ⚖ 240 KB

13C nuclear magnetic resonance spectra—V

13C nuclear magnetic resonance spectra—VI: Stereochemical dependence of γanti, heterosubstituent effects on 13C chemical shifts of bridgehead substituted molecules

✍ Helmut Duddeck; Harald Klein 📂 Article 📅 1977 🏛 Elsevier Science 🌐 French ⚖ 642 KB

Downfield γ-gauche and γ-antiperiplanar

Downfield γ-gauche and γ-antiperiplanar effects on 13C NMR chemical shifts exerted by thiophene sulphur

✍ J. W. de Haan; M. E. van Dommelen; L. J. M. van de Ven; A. Corvers 📂 Article 📅 1978 🏛 John Wiley and Sons 🌐 English ⚖ 299 KB

## Abstract The γ‐effects of sulphur on ^13^C NMR chemical shifts have been measured in a series of steroidal compounds containing the thiophene ring in different configurations with respect to the rest of the molecule. The data constitute the first example of downfield effects exerted by sulphur o

13C13C coupling constants and substituen

13C13C coupling constants and substituent effects on 13C chemical shifts in 13C labelled pyrene and pyrene derivatives

✍ P. E. Hansen; O. K. Poulsen; A. Berg 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 293 KB

## Abstract Long range inter‐ring ^13^C^13^C couplings are found to be effective in the title compounds, and the magnitudes of coupling constants and of substituent effects on ^13^C chemical shifts, as well as the signs of the latter, alternate with respect to the number of connecting bonds.