geometric isomerism

geometric isomerism
: stereoisomerism ascribed to different directional arrangements of specifically located groups in the molecule and usually considered to be caused by prevention of free rotation in parts of the molecule (as by a double bond or a ring) — compare optical isomerism

Useful english dictionary. 2012.

См. также в других словарях:

  • geometric isomerism — geometrinė izomerija statusas T sritis chemija apibrėžtis Izomerija, kurią lemia pakaitų, esančių prie skirtingų atomų, padėties nevienodumas dvigubojo ryšio arba žiedo plokštumos atžvilgiu. atitikmenys: angl. geometric isomerism rus.… …   Chemijos terminų aiškinamasis žodynas

  • geometric isomerism — noun A form of isomerism in which, in one isomer two atoms or groups are on the same side of the plane of a double bond or ring, whereas in the other isomer they are on opposite sides; the first is the cis and the second the trans isomer. Syn …   Wiktionary

  • geometric isomerism — /dʒiəˌmɛtrɪk aɪˈsɒmərɪzəm/ (say jeeuh.metrik uy somuhrizuhm) noun Chemistry → cis trans isomerism …   Australian English dictionary

  • geometric isomerism — an old division of stereoisomerism that contains isomers that differ in the arrangement of substituents of a rigid structure, such as double bonded carbon atoms or a ring. The cis isomer has two referenced groups on the same side of the ring or… …   Medical dictionary

  • geometric isomer — noun either the cis or trans isomer of a compound that exhibits geometric isomerism …   Wiktionary

  • isomerism — The existence of a chemical compound in two or more forms that are identical with respect to percentage composition but differ as to the positions of one or more atoms within the molecules, as well as in physical and chemical properties.… …   Medical dictionary

  • Cis–trans isomerism — Cis but 2 ene Trans but 2 ene In organic che …   Wikipedia

  • Cis-trans isomerism — In chemistry, cis trans isomerism or geometric isomerism or configuration isomerism is a form of stereoisomerism describing the orientation of functional groups within a molecule. In general, such isomers contain double bonds, which cannot rotate …   Wikipedia

  • cis-trans isomerism — noun : geometric isomerism in unsaturated compounds or cyclic compounds depending usually on the presence in the molecule of a pair of substituted groups (as unsymmetrically substituted methylene groups) so that the isomers have comparable… …   Useful english dictionary

  • cis-trans isomerism — noun a form of geometric isomerism in which one isomer has the cis and the other has the trans configuration …   Wiktionary

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