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Structure, modelling and dynamic behaviour of aza-and azaoxamacrocyclic ligands derived from (R, R)-1, 2-diaminocyclohexane

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dc.contributor.author Nasser, Rima
dc.date.accessioned 2019-04-09T10:29:03Z
dc.date.available 2019-04-09T10:29:03Z
dc.date.copyright 2003 en_US
dc.identifier.issn 1477-0539 en_US
dc.identifier.uri http://hdl.handle.net/10725/10383
dc.description.abstract Investigations into the conformational behaviour of macrocyclic ligands 5 and 6 derived from (R,R)-1,2-diaminocyclohexane have been undertaken using molecular modelling, single crystal X-ray diffraction and variable temperature 1H NMR spectroscopy. These have revealed that the lowest energy conformers in both cases do not possess the expected C2-element of symmetry, which can only be accessed at higher temperatures. Instead both molecules exist as C1-conformers at room temperature and in the solid state. In solution a range of dynamic exchange processes is observed which result, in part from the inherent strain in these fused bicyclic systems. An unexpected but characteristic feature of the C1-symmetric conformers is highlighted by the presence of a signal at unexpectedly low field in their 1H NMR spectra due to the interaction of two of the sulfonyl oxygen atoms with one of the bridgehead hydrogen atoms. en_US
dc.language.iso en en_US
dc.title Structure, modelling and dynamic behaviour of aza-and azaoxamacrocyclic ligands derived from (R, R)-1, 2-diaminocyclohexane en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOM en_US
dc.author.idnumber 200904844 en_US
dc.author.department N/A en_US
dc.description.embargo N/A en_US
dc.relation.journal Organic and Biomolecular Chemistry en_US
dc.journal.volume 1 en_US
dc.journal.issue 22 en_US
dc.article.pages 4058-4063 en_US
dc.identifier.doi http://dx.doi.org/10.1039/B306963J en_US
dc.identifier.ctation Pulacchini, S., Nasser, R., Sibbons, K. F., Motevalli, M., Hawkes, G. E., Kroemer, R. T., ... & Watkinson, M. (2003). Structure, modelling and dynamic behaviour of aza-and azaoxamacrocyclic ligands derived from (R, R)-1, 2-diaminocyclohexane. Organic & biomolecular chemistry, 1(22), 4058-4063. en_US
dc.author.email rima.nasser@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url https://pubs.rsc.org/en/content/articlelanding/2003/ob/b306963j/unauth#!divAbstract en_US
dc.author.affiliation Lebanese American University en_US


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