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Conformation of 5,6,11,12-tetrahydrodibenzo [a,e ] cyclooctene : an experimental and theoretical NMR study

Title: Conformation of 5,6,11,12-tetrahydrodibenzo [a,e ] cyclooctene : an experimental and theoretical NMR study
Authors : Jimeno, María Luisa
Alkorta, Ibon
Elguero, José
Anderson, J. Edgar
Claramunt, Rosa María
Lavandera Díaz, José Luis
Keywords: Compuestos heterocíclicos.
Abstract: Hybrid ab initio calculations (GIAO/B3LYP/6-31G*) together with new DNMR experiments (1H and 13C) have been used to clarify the problem of the conformation of 5,6,11,12-tetrahydrodibenzo[a,e]cyclooctene. The carbon-13 chemical shifts have been assigned unambiguously to the chair C and twist-boat TB conformations. Lineshape analysis of the 1H NMR spectra has been carried out at several temperatures using an estimated set of Karplus-type vicinal coupling constants.
Description: En: New Journal of Chemistry. ISSN 1144-0546. n. 22, 1998, págs 1079-1083
URI: http://hdl.handle.net/10637/5530
Rights : http://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
Issue Date: 30-Oct-1998
Center : Universidad San Pablo-CEU
Appears in Collections:Medicina





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