Among cis & trans Decalin which of them present a Chiral molecule?Is that compound resolvable?give reason.

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llltkl | College Teacher | (Level 3) Valedictorian

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Among cis & trans- decalin, the Cis-isomer is chiral. It is a chiral molecule without chiral center; it has a two-fold rotational symmetry axis going through the center of 1-6 bond but no reflective symmetry. However, the chirality is canceled through a rapid chair flipping process that turns the molecule into its mirror image. Hence that compound is not resolvable.