Stereoisomers are isomeric molecules that have the same molecular formula and sequence of bonded atoms (constitution), but that differ only in the three-dimensional orientations of their atoms in space. This contrasts with structural isomers, which share the same molecular formula, but the bond connections or their order differ(s) between differen...
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(from the article `carbohydrate`) ...structural arrangements and properties (i.e., isomers) can be formed by relatively simple variations of their spatial, or geometric, arrangements. ... ...substances are organic (carbon-containing) compounds in which both the arrangement of atoms within the molecule as well as the particular chemical ...
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http://www.britannica.com/eb/a-z/s/160
Isomerism caused by possibilities of different arrangement in three-dimensional space of the atoms within a molecule, resulting in two isomers, called stereoisomers, which are mirror images of each other. See also cis-trans isomerism.
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The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. ... (12 Dec 1998) ...
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(ster″e-o-i-som´әr-iz-әm) the relationship between two or more isomers that have the same structure (linkages between atoms) but different configurations (spatial arrangements), in contrast to constitutional isomerism, in which the isomers have different structures. Stereoisomers are further classified...
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Type: Term Pronunciation: ster′ē-ō-ī-som′ĕr-izm Definitions: 1. Molecular asymmetry, isomerism involving different spatial arrangements of the same groups (androsterone and isoandrosterone, differing only in that one has a 3α-OH, the other a 3β-OH). Synonyms: stereochemical isomerism
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These are molecules with the same structural formula but their atoms have different positions in space. See also: Enantiomers, Isometry, Racemic Mixture, Structural Isomerism.
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the isomerism ascribed to different relative positions of the atoms or groups of atoms in the molecules of organic compounds.
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https://www.infoplease.com/dictionary/stereoisomerism
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