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Organic Chemistry - Stereocenters and related definitions
From achiral to seteroisomers, 9 essential flascards
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Organic Chemistry
Undergraduate 3
09/28/2010

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Term
Isomers
Definition
Different compounds with the same molecular formula.
Term
Constitutional Isomers
Definition
Isomers with different order of attachment (connectivity).
Term
Conformers
Definition
Same connectivity and are interconvertible by rotation about single bonds.
Term
Stereoisomers
Definition
Same connectivity but are not interconvertible by rotation; only by breaking and making bonds.
Term
Chiral
Definition
Mirror image not superimposable on itself.
Term
Enantiomers
Definition
Mirror images; have opposite coniguration at all stereocenters.
Term
Diastereomers
Definition
Stereoisomers but not mirror images; have same configuration at 1 or more stereocenters, but differ at remaining stereocenters.
Term
Meso
Definition
Mirror images (with at least 2 stereocenters) that are identical due to a plane of symmetry.
Term
Achiral
Definition
Molecule and mirror image are identical.
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