𝔖 Bobbio Scriptorium
✦   LIBER   ✦

19F NMR study of 1-halo-F-adamantanes

✍ Scribed by James L. Adcock; Huimin Luo; Sheng Dai

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
246 KB
Volume
31
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

An ‘anomalous’ variation of β‐fluorine chemical shifts with respect to the inductive effect in the ^19^F NMR of a series of 1‐halo‐F‐adamantanes is reported. These fluorine chemical shifts are similar to the hydrogen chemical shift anomaly found in the corresponding hydrocarbon halides. Whereas the γ‐hydrogen chemical shifts can be rationalized by the inductive effect, the γ‐fluorine chemical shifts have the same ‘anomalous’ variation as found in the β‐fluorine chemical shifts.

📜 SIMILAR VOLUMES

19F-NMR study of DNA bis-intercalation
19F-NMR study of DNA bis-intercalation
✍ Alain Delbarre; Richard H. Shafer; Thomas L. James 📂 Article 📅 1983 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 241 KB 👁 1 views
19F and 1H NMR spectra of halocarbons
19F and 1H NMR spectra of halocarbons
✍ Anthony Foris 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 289 KB

## Abstract ^19^F NMR chemical shifts and coupling constants are reported for 215 compounds. For 77 of these compounds, ^1^H NMR spectral data are also given. Long‐range couplings, including ^8^J(F,F) and ^5^J(F,H), are reported. The complexity of halocarbon spectra owing to the presence of rotatio

Quantitative 19F NMR study of trifluorot
Quantitative 19F NMR study of trifluorothymidine metabolism in rat brain
✍ Reza Pouremad; Kenneth D. Bahk; Ying-Jun Shen; Richard H. Knop; Alice M. Wyrwicz 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 91 KB 👁 2 views

Metabolism of trifluorothymidine (TFT) and its transport across the blood-brain barrier (BBB) has been measured quantitatively in rats by fluorine-19 nuclear magnetic resonance spectroscopy ( 19 F NMR). It is demonstrated that TFT crosses the BBB in micromolar quantities and is metabolized in brain

Fluorine-19 MAS and 1H→19F CP/MAS NMR st
Fluorine-19 MAS and 1H→19F CP/MAS NMR studies of Viton fluoropolymers
✍ Gustavo A. Monti; Robin K. Harris 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 191 KB 👁 2 views

Fluorine-19M1HN nuclear magnetic resonance (NMR) at 188.29 MHz, including 1H ] 19FM1HN crosspolarization (CP) with high-speed magic-angle spinning (MAS), was used to study some Ñuoropolymers of the Viton type. The systems examined were (a) copolymers of vinylidene Ñuoride and hexaÑuoropropene and (b