Variable angle spinning (VAS) NMR study of solvent effects in liquid crystalline solutions of C-13-iodomethane

TitleVariable angle spinning (VAS) NMR study of solvent effects in liquid crystalline solutions of C-13-iodomethane
Publication TypeJournal Article
Year of Publication2004
AuthorsPark G.HJ, Martin R.W, Sakellariou D., Pines A, Shahkhatuni A.G, Shahkhatuni A.A, Panosyan H.A
JournalChemical Physics Letters
Volume399
Issue1-3
Pagination196-199
Date PublishedNov 21
ISBN Number0009-2614
Accession NumberWOS:000225324400036
Keywordsphases
Abstract

NMR spectra of C-13-iodomethane oriented in three different liquid crystalline solvents have been collected and analyzed under spinning at various angles with respect to the static magnetic field. For each sample the ratio of homonuclear (H-1-H-1) to heteronuclear (C-13-H-1) dipolar couplings, which is a function of the geometry of the solute molecule, does not change significantly with the scaling of the dipolar couplings due to spinning at different angles. This result implies that the 'apparent bond angle deviations' (Deltatheta(a)), previously calculated from thermotropic liquid crystals, arise from a solvent effect and are not an artifact from scaling the anisotropic interactions. (C) 2004 Elsevier B.V. All rights reserved.

URL<Go to ISI>://WOS:000225324400036
DOI10.1016/J.Cplett.2004.10.009
Short TitleVariable angle spinning (VAS) NMR study of solvent effects in liquid crystalline solutions of C-13-iodomethane
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