✦ LIBER ✦

A Multiple-Quantum 1H NMR Study of Partially Oriented Biphenylene

✍ Scribed by J.M. Polson; E.E. Burnell

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 482 KB
Volume: 106
Category: Article
ISSN: 1064-1858
DOI: 10.1006/jmra.1994.1028

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

1H NMR study of partially oriented 1-phe

1H NMR study of partially oriented 1-phenylpropyne

✍ C. L. Khetrapal; R. Highet 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 203 KB

## Abstract The proton magnetic resonance spectrum of partially oriented 1‐phenylpropyne has been studied and the values of the chemical shifts, the direct and the indirect coupling constants determined from the analysis of the spectrum. The ratios of the interproton distances have been derived. No

A 1H NMR study of the tropylium ion, par

A 1H NMR study of the tropylium ion, partially oriented in a lyotropic solvent

✍ P. Diehl; J. Jokisaari; G. Dombi 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 141 KB

## Abstract The ^1^H NMR spectrum of tropylium fluoroborate dissolved and oriented in a lyotropic decyl sulphate phase has been recorded and analysed. Direct as well as indirect HH coupling constants have been obtained. The vibrationally uncorrected proton skeleton structure deviates slightly from

Multiple-Quantum NMR Spectra of Partiall

Multiple-Quantum NMR Spectra of Partially Oriented Indene: A New Approach to Estimating Order in a Nematic Phase

✍ Leslie D. Field; Saadallah A. Ramadan; Gregory K. Pierens 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 152 KB

Multiple-quantum proton NMR spectra of the 8-spin system of indene partially oriented in a nematic mesophase were acquired using a magnetic field gradient (MFG) method. Six-, seven-and eight-quantum spectra were solved to yield all intramolecular dipolar couplings (D i j ) which were used to determi

A Multiple-Quantum1H NMR Study of Confor

A Multiple-Quantum1H NMR Study of Conformational Biasing of Biphenyl in a Nematic Liquid Crystal

✍ T. Chandrakumar; James M. Polson; E.Elliott Burnell 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 156 KB

## Multiple-quantum 1 H NMR spectroscopy was used to simplify In this paper, we present a study of oriented biphenyl. The the analysis of the complicated one-quantum spectrum of the 10molecular structure of biphenyl is shown in Fig. 1. The biphenyl spin molecule biphenyl dissolved in a nematic sol

A Comparative 1H- and 13C-NMR Study of t

A Comparative 1H- and 13C-NMR Study of the Dianion and Dication of Biphenylene

✍ Rainer Benken; Klaus Finneiser; Henning Von Puttkamer; Harald Günther; Bertil El 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 German ⚖ 432 KB

Biphenylene dianion has been prepared by Li reduction of the parent hydrocarbon. It is stable below -30' and was characterized by its 'Hand I3C-NMR spectra. A comparison of these data with those of the dication indicates he existence of ion pairs in the dianion case which are responsible for a diffe

An NMR study of cis-2-butene partially o

An NMR study of cis-2-butene partially oriented in a nematic phase

✍ E. E. Burnell; P. Diehl 📂 Article 📅 1973 🏛 John Wiley and Sons 🌐 English ⚖ 256 KB 👁 1 views

## Abstract The NMR spectrum of __cis__‐2‐butene partially oriented in a nematic phase has been analysed, and information about the geometry and the indirect spin‐spin coupling constants has been obtained. Assuming the barrier of rotation of the methyl groups and other geometrical information from