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- Absolute_configuration abstract "An absolute configuration in stereochemistry refers to the spatial arrangement of the atoms of a chiral molecular entity (or group) and its stereochemical description e.g. R or S, referring to Rectus, or Sinister, respectively.Absolute configurations for a chiral molecule (in pure form) are most often obtained by X-ray crystallography. All enantiomerically pure chiral molecules crystallise in one of the 65 Sohncke Groups (Chiral Space Groups).Alternative techniques are Optical rotatory dispersion, vibrational circular dichroism and the use of chiral shift reagents in proton NMR and Coulomb Explosion Imaging.When the absolute configuration is obtained the assignment of R or S is based on the Cahn-Ingold-Prelog priority rules.Absolute configurations are also relevant to characterization of crystals.Until 1951 it was not possible to obtain the absolute configuration of chiral compounds. It was at some time decided that (+)-glyceraldehyde was the (R)-enantiomer. The configuration of other chiral compounds was then related to that of (+)-glyceraldehyde by sequences of chemical reactions. For example (+)-glyceraldehyde (1) was related to (−)-glyceric acid 2 (oxidation by mercury oxide) which in turn was related to (+)-isoserine 3 (nitric acid oxidation) and bromide 4 and (−)-lactic acid 5 (zinc reduction). Because the chemical transformations did not affect the asymmetric carbon atom, this sequence demonstrated that (−)-lactic acid was also a (R)-enantiomer.determination of relationships in absolute configurationIn 1951 Bijvoet for the first time used in X-ray crystallography the effect of anomalous dispersion, which is now referred to as resonant scattering, to determine absolute configuration. The compound investigated was (+)-sodium rubidium tartrate and from its configuration (R,R) it was deduced that the original guess for (+)-glyceraldehyde was correct.".
- Absolute_configuration thumbnail R_S_configuration.png?width=300.
- Absolute_configuration wikiPageID "7587207".
- Absolute_configuration wikiPageLength "2924".
- Absolute_configuration wikiPageOutDegree "29".
- Absolute_configuration wikiPageRevisionID "665210577".
- Absolute_configuration wikiPageWikiLink Anomalous_dispersion.
- Absolute_configuration wikiPageWikiLink Atom.
- Absolute_configuration wikiPageWikiLink Cahn-Ingold-Prelog_priority_rule.
- Absolute_configuration wikiPageWikiLink Cahn–Ingold–Prelog_priority_rules.
- Absolute_configuration wikiPageWikiLink Category:Stereochemistry.
- Absolute_configuration wikiPageWikiLink Chemical_reaction.
- Absolute_configuration wikiPageWikiLink Chiral_shift_reagent.
- Absolute_configuration wikiPageWikiLink Chirality_(chemistry).
- Absolute_configuration wikiPageWikiLink Crystal.
- Absolute_configuration wikiPageWikiLink Dispersion_(optics).
- Absolute_configuration wikiPageWikiLink EuFOD.
- Absolute_configuration wikiPageWikiLink Glyceraldehyde.
- Absolute_configuration wikiPageWikiLink Glyceric_acid.
- Absolute_configuration wikiPageWikiLink Isoserine.
- Absolute_configuration wikiPageWikiLink Johannes_Martin_Bijvoet.
- Absolute_configuration wikiPageWikiLink Lactic_acid.
- Absolute_configuration wikiPageWikiLink Mercury_oxide.
- Absolute_configuration wikiPageWikiLink Molecular_configuration.
- Absolute_configuration wikiPageWikiLink Molecular_entity.
- Absolute_configuration wikiPageWikiLink Nitric_acid.
- Absolute_configuration wikiPageWikiLink Optical_rotatory_dispersion.
- Absolute_configuration wikiPageWikiLink Proton_NMR.
- Absolute_configuration wikiPageWikiLink Proton_nuclear_magnetic_resonance.
- Absolute_configuration wikiPageWikiLink Resonant_scattering.
- Absolute_configuration wikiPageWikiLink Sohncke_Group.
- Absolute_configuration wikiPageWikiLink Stereochemistry.
- Absolute_configuration wikiPageWikiLink Tartrate.
- Absolute_configuration wikiPageWikiLink Ultraviolet-visible_spectroscopy_of_stereoisomers.
- Absolute_configuration wikiPageWikiLink X-ray_crystallography.
- Absolute_configuration wikiPageWikiLink Zinc.
- Absolute_configuration wikiPageWikiLink File:R_S_configuration.png.
- Absolute_configuration wikiPageWikiLink File:Relative_absolute_configuration.svg.
- Absolute_configuration wikiPageWikiLinkText "Absolute configuration".
- Absolute_configuration wikiPageWikiLinkText "absolute configuration".
- Absolute_configuration wikiPageWikiLinkText "absolute".
- Absolute_configuration wikiPageWikiLinkText "configured".
- Absolute_configuration hasPhotoCollection Absolute_configuration.
- Absolute_configuration wikiPageUsesTemplate Template:Reflist.
- Absolute_configuration subject Category:Stereochemistry.
- Absolute_configuration comment "An absolute configuration in stereochemistry refers to the spatial arrangement of the atoms of a chiral molecular entity (or group) and its stereochemical description e.g. R or S, referring to Rectus, or Sinister, respectively.Absolute configurations for a chiral molecule (in pure form) are most often obtained by X-ray crystallography.".
- Absolute_configuration label "Absolute configuration".
- Absolute_configuration sameAs Configuration_absolue.
- Absolute_configuration sameAs Absolute_configuratie.
- Absolute_configuration sameAs Konfiguracja_absolutna.
- Absolute_configuration sameAs m.0266124.
- Absolute_configuration sameAs Q2052053.
- Absolute_configuration sameAs Q2052053.
- Absolute_configuration wasDerivedFrom Absolute_configuration?oldid=665210577.
- Absolute_configuration depiction R_S_configuration.png.
- Absolute_configuration isPrimaryTopicOf Absolute_configuration.