Arumugam, S and Kunwar, AC and Khetrapal, CL (1984) Structure of dibenzofuran and dibenzothiophene: Proton NMR study in nematic phases. In: Organic Magnetic Resonance, 22 (9). pp. 547-549.
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Abstract
Proton NMR spectra of dibenzofuran and dibenzothiophene were investigated in the nematic phase of liquid crystals. Dipolar couplings obtained from the spectral analysis were used to derive the inter-proton distance ratios. Deviations from planarity were observed in both molecules, and an attempt was made to determine the extent of non-planarity. Differences in the relative inter-proton distances in the two molecules are explained in terms of the bond polarization hypothesis and the van der Waals and the covalent radii of the oxygen and sulphur heteroatoms.
| Item Type: | Journal Article |
|---|---|
| Additional Information: | Copyright of this article belongs to John Wiley and Sons. |
| Keywords: | dibenzofuran;proton nmr;dibenzothiophene;spectral analysis;bond polarization hypothesis |
| Department/Centre: | Division of Chemical Sciences > Organic Chemistry |
| Date Deposited: | 18 Aug 2005 |
| Last Modified: | 08 Feb 2012 05:14 |
| URI: | http://eprints.iisc.ernet.in/id/eprint/3523 |
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