Chemijos terminų aiškinamasis žodynas – 2-asis patais. ir papild. leid. – Vilnius: Mokslo ir enciklopedijų leidybos institutas. Kazys Daukšas, Jurgis Barkauskas, Vitas Daukšas. 2003.
isomerism — /uy som euh riz euhm/, n. 1. Chem. the relation of two or more compounds, radicals, or ions that are composed of the same kinds and numbers of atoms but differ from each other in structural arrangement (structural isomerism), as CH3OCH3 and… … Universalium
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
Conformational isomerism — Conformers of butane, shown in Newman projection. The two gauche as well as the anti form are staggered conformations In chemistry, conformational isomerism is a form of stereoisomerism in which the isomers can be interconverted exclusively by… … Wikipedia
Double bond — A double bond in chemistry is a chemical bond between two chemical elements involving four bonding electrons instead of the usual two. The most common double bond, that between two carbon atoms, can be found in alkenes. Many types of double bonds … Wikipedia
covalent bond — Chem. the bond formed by the sharing of a pair of electrons by two atoms. [1960 65] * * * Force holding atoms in a molecule together as a specific, separate entity (as opposed to, e.g., colloidal aggregates; see bonding). In covalent bonds, two… … Universalium
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
cis-trans isomerism — /ˌsɪs trænz aɪˈsɒmərɪzəm/ (say .sis tranz uy somuhrizuhm) noun a form of isomerism occurring in a molecule which is rigid because it contains a double bond or ring system. The cis isomer has specific groups on the same side, and the trans isomer… …
geometric isomerism — noun : 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)… … Useful english dictionary
