✦ LIBER ✦

The molecular structure and unusual orientation of phenol in a liquid crystal solevent as determined by NMR spectroscopy

✍ Scribed by P. Diehl; P. M. Henrichs

Publisher: John Wiley and Sons
Year: 1971
Tongue: English
Weight: 288 KB
Volume: 3
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270030618

No coin nor oath required. For personal study only.

✦ Synopsis

The NMR spectrum of phenol, dissolved in a nematic solvent, is explainable in terms of two averaging planar structures for each of which the principle axis of orientation in the ring is on the opposite side of the oxygen atom from the hydroxyl proton. External hydrogen bonding to the solvent seems to be an important factor in determining the orientation. The molecular structure obtained is compared with those found by microwave spectroscopy and X-ray diffraction.

📜 SIMILAR VOLUMES

Structure elucidation and 3D solution co

Structure elucidation and 3D solution conformation of the antibiotic enduracidin determined by NMR spectroscopy and molecular dynamics

✍ F. Castiglione; A. Marazzi; M. Meli; G. Colombo 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 367 KB

Enduracidin and ramoplanin belong to the large family of cyclodepsipeptide antibiotics, highly effective against Gram-positive bacteria. The primary and 3D solution structure of ramoplanin is already well known, and the primary structure of enduracidin has been determined by a combination of chemica

2H NMR spectroscopy of liquid crystals:

2H NMR spectroscopy of liquid crystals: Structure and orientational order of a chiral smectogen as a model compound of side-group LC polymers

✍ Donata Catalano; Leonardo Chiezzi; Valentina Domenici; Marco Geppi; Carlo Albert 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 180 KB 👁 2 views

Dynamics and structure in the Mn2+ site

Dynamics and structure in the Mn2+ site of concanavalin A as determined by high-field EPR and ENDOR spectroscopy

✍ Daniella Goldfarb; Kuppala V. Narasimhulu; Raanan Carmieli 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 344 KB

NMR study of molecules in anisotropic sy

NMR study of molecules in anisotropic systems. III—Structure and orientation of 1a,2a,3e,4e,5e,6a-hexachlorocyclohexane in a nematic liquid crystal determined from low-temperature experiments

✍ Hideaki Fujiwara; Naoto Shimizu; Tatsuya Takagi; Yoshio Sasaki 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 English ⚖ 461 KB 👁 1 views

H NMR spectra of la,2a,3e,4e,5e,6a-hexachlorocyclohexane (y-BHC) have been measured in a nematic solution of ZLI2081 at low temperatures to prevent exchange broadening. The spectra were analysed and direct couplings determined. The six-membered ring is most favourably oriented parallel to the solven

Natural Abundance Deuterium NMR Spectros

Natural Abundance Deuterium NMR Spectroscopy in Polypeptide Liquid Crystals as a New and Incisive Means for the Enantiodifferentiation of Chiral Hydrocarbons

✍ Philippe Lesot; Muriel Sarfati; Jacques Courtieu 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 361 KB 👁 1 views

Chemical shifts for tritons in the ortho

Chemical shifts for tritons in the ortho, meta and para positions of toluene as determined by tritium NMR spectroscopy

✍ D. Calvert; R. W. Martin; A. L. Odell 📂 Article 📅 1978 🏛 John Wiley and Sons 🌐 English ⚖ 135 KB

## Abstract Chemical shifts for tritons in __ortho__, __meta__ and __para__ positions in toluene have been determined using a 64 MHz tritium NMR spectrometer. The order of shift is __meta__>__para__>__ortho__, whereas the calculated shift order for protons is __meta__>__ortho__>__para__.