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dc.creatorVinijchuk, A. V.en_US
dc.creatorGolovina, N. A.en_US
dc.creatorPolishchuk, A. P.en_US
dc.creatorPuchkovskaya, G.en_US
dc.date.accessioned2007-11-20T17:17:11Z
dc.date.available2007-11-20T17:17:11Z
dc.date.issued1995en_US
dc.identifier1995-FE-08en_US
dc.identifier.urihttp://hdl.handle.net/1811/29953
dc.descriptionAuthor Institution: Ukrainian Academy of Sciences, Prospect Nauki, 46, 252650 Kiev, Ukraine.en_US
dc.description.abstractIn this report IR spectra of cholesteryle n-aloxybenzoates homologes (n=1, 3-6, 110, 16) in 100-570 K temperature range have been studied and X-ray structural analysis of the crystals has been performed. On the base of interpreted spectra the IR-band, which are the most sensitive to phase transitions, were found. These are the esteric group vibrations $(1100-1120 cm^{-1}, 1240-1290 cm^{-1}, 1700-1740 cm^{-1})$ and the benezene ring stretching vibrations Q (C = C) $(1515 cm^{-1}, 1580 cm^{-1}, 1610 cm^{-1})$, It was found that in contrast to n-alkaonates of cholesterine, the methylene chains of all investigated homologues are melted in crystalline phase even at 100K. It is explained by the antiparallel packing of the AOBCh molecules in layers, when alkyl ``tail'' has a free space between the rigid volume steroid nucleus. By means of IR and X-ray techniques it was found that there are nonequivalent molecules, even in solid state, which differ from each other by angle between the planes of steroid nucleus and ester group.en_US
dc.format.extent68182 bytes
dc.format.mimetypeimage/jpeg
dc.language.isoEnglishen_US
dc.publisherOhio State Universityen_US
dc.titleCONFORMATIONAL MOBILITY OF CHOLESTERYLE n-ALKOXYBENZOATES AT THE PHASE TRANSITIONSen_US
dc.typearticleen_US


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