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Closing of a glass capillary column with paraffin

✍ Scribed by Janssen, F. ;Kalidin, T.

Publisher: John Wiley and Sons
Year: 1982
Tongue: English
Weight: 149 KB
Volume: 5
Category: Article
ISSN: 0935-6304
DOI: 10.1002/jhrc.1240050213

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✦ Synopsis

These results (Table 2) indicate a moderately constant ARM value forstructure element CID ringsandside chain in eachseriesof5acholestane derivatives. The difference between the ARM values for CID rings and side chain in both series of compounds deserves further comment. According to Dreiding models of the investigated epoxides and enolic diketones, the latter have the more planar structures and therefore allow a closer approach of the nonpolar parts of the molecules to the adsorptive surface.This closer approach should result in stronger binding of these parts of the molecules to the adsorbent, leading to a greater contribution of CID rings and side chain to the retention behavior of the enolic 1,3-dicarbonyl-5a-cholestane derivatives.

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