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Crystal structures and thermotropic properties of alkyl α-d-glucopyranosides and their hydrates

Title data

Hoffmann, Bettina ; Milius, Wolfgang ; Voss, Gundula ; Wunschel, Markus ; van Smaalen, Sander ; Diele, Siegmar ; Platz, Gerhard:
Crystal structures and thermotropic properties of alkyl α-d-glucopyranosides and their hydrates.
In: Carbohydrate Research. Vol. 323 (1999) Issue 1–4 . - 192 - 201.
ISSN 0008-6215
DOI: https://doi.org/10.1016/S0008-6215(99)00264-5

Official URL: Volltext

Abstract in another language

Thermotropic properties and crystal structures of alkyl α-d-glucopyranosides and their hydrates were estimated by X-ray, {DSC} and thermogravimetric measurements (TGA). Monohydrates rapidly lose their crystal water several degrees below the melting point of the anhydrous glucopyranosides. The melting points of the monohydrates measured in {DSC} pressure cells (chain length longer than seven) are lower, and the clearing points higher than those of the anhydrous glucosides. Layer distances of smectic and crystalline phases of anhydrous compounds were established. Melting points, densities and layer distances of the crystalline anhydrous glucopyranosides display strong even–odd effects. The strong decrease of these effects in the case of the monohydrates can be elucidated by the results of X-ray crystal structure analysis.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: TGA
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography > Chair Crystallography - Univ.-Prof. Dr. Sander van Smaalen
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 23 Mar 2016 10:21
Last Modified: 23 Mar 2016 10:21
URI: https://eref.uni-bayreuth.de/id/eprint/32013