Davies, J. Eric D. and Tabner, Vivienne A. (1998) Clathrate and inclusion compounds : part 13. Vibrational and NMR spectroscopic studies of carboxylic acid guests in urea. Journal of Inclusion Phenomena and Macrocyclic Chemistry, 31 (2). pp. 99-107. ISSN 0923-0750Full text not available from this repository.
Infrared, Raman and solid state13C NMR spectra have been recorded for arange of inclusion compounds of urea containingstraight chain aliphatic carboxylic acids(butyric – decanoic) as guests. Inclusioncompounds are not formed with formic, acetic andpropionic acids. Thiourea does not forminclusion compounds with any of the C1 to C10acids. The vibrational and NMR data support theconclusion that the acids are present ashydrogen bonded dimers in the channels of thehost. The alkyl chain 13C chemical shiftvalues are very different from those of acidguests in the cavities formed in Dianin'scompound. These suggest that the alkyl chainsare present in the all-trans conformation,although weak bands observed in the spectrum ofthe decanoic acid inclusion compound lend somesupport to suggestions based on MM calculationsthat other conformations might be present.
|Journal or Publication Title:||Journal of Inclusion Phenomena and Macrocyclic Chemistry|
|Uncontrolled Keywords:||IR spectroscopy - Raman spectroscopy - 13C MAS NMR spectroscopy - clathrates - inclusion compounds - carboxylic acids - urea - thiourea|
|Subjects:||G Geography. Anthropology. Recreation > GE Environmental Sciences|
|Departments:||Faculty of Science and Technology > Lancaster Environment Centre|
Faculty of Health and Medicine > Biomedical & Life Sciences
Faculty of Arts & Social Sciences
|Deposited On:||09 Feb 2009 09:36|
|Last Modified:||26 Jul 2012 15:52|
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