CHEM 123 Lecture Notes - Lecture 29: Bond Length, Stereocenter, Enantiomer

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CHEM 123 Full Course Notes
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>key terms: constitutional isomers, same molecular formula but with different atom structure/iupac name. Different #saturation of h via different #bonds (ex. Identical atom constitution/connectivity but differ in arrangement of atom in space a: enantiomers & diastereomers, enantiomers (optical isomers, non-superimposable mirror images pair, all stereocenters switched between 2 pair (all dash wedge) b. i. All r/s trend opposite?: diastereomers, not mirror images of one another a. i. a. ii. Need to break pi-bonds to rotate (e z) so different molecules: some but not all stereocenters switch. Both wedge with r/s both dash with s/r ( rotate 2 arms : meso (achiral plane of symmetry + asymmetric centers, chirality, property of being non-superimposable on its mirror image (different molecules, characteristics: Only 1 asymmetric center (is not required to have a stereocenter: achiral, characteristics: Superimposable on mirror image (identical molecule) a. i. a. ii. *asymmetric center (specific: atom with 4 different substituents, sp3 hybridized, meso, characteristics: a. i. Mirror image with internal plane of symmetry (achiral: x.

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