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18 Cards in this Set
- Front
- Back
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Configurational |
A Stereoisomers;Same connectivity but differ by relative bond configuration. (Enantiomer/Diastereomer) |
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Enantiomer |
Configurational isomer; Mirror image but not superimposable |
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Diastereomer |
Configurational isomer; Not mirror images; same formula, same connectivity but different molecules; cis or trans |
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Chirality |
Chiral or Achiral |
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Chiral |
Molecule with an enantiomer (non-superimposable mirror image) |
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Achiral |
Molecule without an enantiomer |
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Plane of symmetry chirality test |
Chiral - w/o plane of symmetry on hexane
Achiral - w/ a plane of symmetry on hexane |
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Stereocentre |
Atom where interchanging any 2 of its groups results in a different stereoisomer |
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Tetrahedral Stereocentre |
cental atom bonded to 4 different groups |
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Meso isomers |
Molecules with at least 2 stereocentres but contains a plane of symmetry and therefore is overall achiral |
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Enantiomer vs Diastereomer |
Enantiomers - related by inversion of all stereocenters Diastereomers - related by inversion of some and not all stereocentres |
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Maximum number of configurational isomers |
2^n config isomers, with n number of stereocentres |
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Constitutional Isomers |
differ by connectivity (bond multiplicity, ring/chain) |
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Enantiomer properties |
similar depending on environment |
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Chiral Environment |
other chiral species must have at least one different physical/chemical property |
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Achiral Environment |
No other chiral species or other chiral species with the very same physical/chemical properties |
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Diasteromer properties |
with different physical/chemical properties |
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Double bond stability |
the more alkyl substituted, the more stable a double bond |
