𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The structural and dynamic properties of 1-bromodecane in urea inclusion compounds investigated by solid-state 1H, 13C and 2H NMR spectroscopy

✍ Scribed by Xiaorong Yang; Klaus Müller

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
312 KB
Volume
49
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

For asymmetric guest molecules in urea, the end‐groups of two adjacent guest molecules may arrange in three different ways: head–head, head–tail and tail–tail. Solid‐state ^1^H and ^13^C NMR spectroscopy is used to study the structural properties of 1‐bromodecane in urea. It is found that the end groups of the guest molecules are randomly arranged. The dynamic characteristics of 1‐bromodecane in urea inclusion compounds are probed by variable‐temperature solid‐state ^2^H NMR spectroscopy (line shapes, spin–spin relaxation: T~2~, spin‐lattice relaxation: T~1Z~ and T~1Q~) between 120 K and room temperature. The comparison between the simulation and experimental data shows that the dynamic properties of the guest molecules can be described in a quantitative way using a non‐degenerate three‐site jump process in the low‐temperature phase and a degenerate three‐site jump in the high‐temperature phase, in combination with the small‐angle wobbling motion. The kinetic parameters can be derived from the simulation. Copyright © 2011 John Wiley & Sons, Ltd.

📜 SIMILAR VOLUMES

Raman and solid state 13C-NMR investigat
Raman and solid state 13C-NMR investigation of the structure of the 1 : 1 amorphous piroxicam : β-cyclodextrin inclusion compound
✍ Enrico Redenti; Margherita Zanol; Paolo Ventura; Giovanni Fronza; Angiolina Como 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 176 KB 👁 2 views

The results of a Raman and solid state 13 C-NMR spectroscopic investigation aimed at studying the conformation of piroxicam (P) and its interaction with ␤-cyclodextrin (␤CD) in 1 : 1 amorphous P␤CD inclusion compound are reported. The 1700 -1200 cm Ϫ1 FT-Raman and the 13 C CP/MAS NMR spectra of 1 :

Characterization of the molecular reorie
Characterization of the molecular reorientational dynamics of the neat ionic liquid 1-butyl-3-methylimidazolium bromide in the super cooled state using 1H and 13C NMR spectroscopy
✍ Mamoru Imanari; Hiroyuki Tsuchiya; Hiroko Seki; Keiko Nishikawa; Mitsuru Tashiro 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 111 KB

## Abstract The ^13^C spectra and ^13^C longitudinal relaxation times (__T__~1~) were measured to investigate the segmental motion of the neat ionic liquid 1‐butyl‐3‐methylimidazolium bromide ([bmim]Br) in the super cooled state. The ^13^C signals of the imidazole ring significantly broadened at 28

The structure of 2-carboxyphenyl methyl
The structure of 2-carboxyphenyl methyl selenoxide, its sodium salt and related compounds in solution, studied by 1H, 13C and 77Se NMR
✍ Warö Nakanishi; Yoshitsugu Ikeda; Hiizu Iwamura 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 496 KB 👁 1 views

## Abstract ^1^H, ^13^C and ^77^Se NMR spectra of 2‐carboxyphenyl methyl selenoxides, 2‐carboxyphenyl phenyl selenoxides, their sodium salts and related compounds have been measured to determine their structures in solution. The ^77^Se NMR chemical shifts and the __J__(^77^Se, ^13^C) values were fo

Investigation of Benzimidazoles. 5—trans
Investigation of Benzimidazoles. 5—transmission of the substituent effects in 2-substituted 5(6)-nitrobenzimidazoles studied by 1H, 13C and 15N NMR spectroscopy
✍ V. A. Lopyrev; L. I. Larina; T. I. Vakul'skaya; M. F. Larin; E. F. Shibanova; I. 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 360 KB

The iniluence of substituents on the 'H, "C and 15N NMR chemical shifts of 2-substituted 5(6)nitrobenzimidazoles and their analogues labelled with 15N in the nitro group was investigated. It was found that the substituent effects are transmitted to the carbon and hydrogen nuclei in positions 4-7 mai