Premium
Polylithiumorganische Verbindungen, XVI. 1,4‐Disila[6]radialene: Aktivierungsparameter der Sessel‐Twist‐Inversion und analytische Enantiomerentrennung der Twist‐Konformeren
Author(s) -
Maercker Adalbert,
Brieden Walter,
Kastner Fritz,
Mannschreck Albrecht
Publication year - 1991
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19911240925
Subject(s) - twist , conformational isomerism , chemistry , enantiomer , inversion (geology) , stereochemistry , crystallography , molecule , organic chemistry , geometry , geology , mathematics , paleontology , structural basin
Polylithiumorganic Compounds, XVI. – 1,4‐Disila[6]radialenes: Activation. Parameters of the Chair‐Twist Inversion and Analytical Separation of the Enantiomers of the Twist Conformers Kinetic measurements of the chair‐twist inversion of the 1,4‐disila[6]radialenes 2 – 4 have been performed at four different temperatures, respectively. The entropies of activation are found to be negative. While the chair conformers of the radialenes are achiral as expected, the enantiomers of the three twist conformers could be separated by HPLC on an optically active stationary phase.