Difference between revisions of "Absolute structure"
From Online Dictionary of Crystallography
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== Background == | == Background == | ||
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| + | The above definition of ''absolute structure'' has been designed with the intent to show its similarities and differences with that of the IUPAC definition of [http://www.chem.qmul.ac.uk/iupac/stereo/A.html#01 ''absolute configuration'']: <br> | ||
| + | ''The spatial arrangement of the atoms of a chiral molecular entity (or group) and its stereochemical description''<br> | ||
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| + | absolute structure absolute configuration | ||
| + | object crystal molecule | ||
| + | symmetry non-centrosymmetric chiral | ||
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== Related chemical terms == | == Related chemical terms == | ||
Revision as of 15:09, 14 February 2006
Definition
The spatial arrangement of the atoms of a physically identified non-centrosymmetric crystal and its description by way of unit-cell dimensions, space group, and representative coordinates of all atoms.
Background
The above definition of absolute structure has been designed with the intent to show its similarities and differences with that of the IUPAC definition of absolute configuration:
The spatial arrangement of the atoms of a chiral molecular entity (or group) and its stereochemical description
absolute structure absolute configuration
object crystal molecule symmetry non-centrosymmetric chiral
Related chemical terms
The IUPAC Basic Terminology of Stereochemistry contains definitions of related chemical terms of use to the crystallographer, viz: absolute configuration, chiral, chirality, chirality sense, enantiomer, enantiomerically pure, enantiomorph, racemate, racemic, racemic conglomerate and relative configuration.