cis-trans isomerism

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cis-trans isomerism

[′si¦stranz ī′säm·ə‚riz·əm]
(organic chemistry)
A type of geometrical isomerism found in alkenic systems in which it is possible for each of the doubly bonded carbons to carry two different atoms or groups; two similar atoms or groups may be on the same side (cis) or on opposite sides (trans) of a plane bisecting the alkenic carbons and perpendicular to the plane of the alkenic system.
References in periodicals archive ?
Particles with these shapes allow for the preservation of the harmless cis configuration in the hydrogenated fats, and other lattices found by the researchers favour the production of trans fats.
71 ppm for the cis configuration, and a peak at [delta] 2.
Azobenzene groups have been previously used to trigger photochemical liquid crystalline to isotropic phase transitions, because the trans configuration is mesogenic, but the cis configuration disrupts the liquid crystalline phase.