cis-trans isomerism

(redirected from Trans configuration)
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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 ?
7 Hz) suggested 1,2-glycolic functions with a trans configuration and 2[alpha],3[beta]-dihydroxy cholestane type skeleton [9-10].
5% of CD patients carried DQA1*05 and DQB1*02 alleles, either in cis or in trans configuration.
A trans-fat, which is a fat molecule containing one or more unsaturated fatty acids in the trans configuration, is produced industrially by a process called hydrogenation.
In the trans configuration there was potential for both esters to be either equatorial or axial.
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.
Comparison of the coupling constant of product 2 with the similar compounds [15, 16] indicated that bromines are in the trans configuration (Scheme-1).
The monomers are randomly distributed in the polymer structure, while the butadiene fraction is found in its major part in the trans configuration, with a smaller fraction the cis and vinyl configurations, according to the literature.
When a double bond occurs along the carbon chain in a fatty acid, the molecule can be arranged in either the acid or trans configuration.

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