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Enantiomerization of 2,2′‐diisopropylbiphenyl during chiral inclusion gas chromatography: Determination of the rotational energy barrier by computer simulation of dynamic chromatographic elution profiles
Author(s) -
Jung Martin,
Fluck Markus,
Schurig Volker
Publication year - 1994
Publication title -
chirality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.43
H-Index - 77
eISSN - 1520-636X
pISSN - 0899-0042
DOI - 10.1002/chir.530060610
Subject(s) - chemistry , racemization , elution , chromatography , gas chromatography , kinetics , kinetic energy , gradient elution , analytical chemistry (journal) , stationary phase , rotational energy , activation energy , high performance liquid chromatography , organic chemistry , atomic physics , physics , quantum mechanics
By computer simulation of experimental dynamic gas chromatographic elution profiles, the rotational energy barrier Δ G = of racemic 2,2′‐diisopropylbiphenyl has been determined as 114.6–115.0 kJ/mol (75–100°C). These data are in good agreement with a value that was determined previously by measuring the racemization kinetics of an enriched sample. This indicates that there is no measurable catalytic or inhibitory effect of the stationary phase. © 1994 Wiley‐Liss, Inc.