Chapter 9 - Chapter 9 Stereochemisty 9.1 Enantiomers and...

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Sheet1 Page 1 Chapter 9 Stereochemisty 9.1 Enantiomers and the Tetrahedral Carbon Enantiomers: molecules that are not identical to their mirror images (a type of stereoisomer) 9.2 The Reason for Handedness in Molecules: Chirality Molecules that exist in two enantiomeric forms are chiral -a molecule cannot be chiral if it contains a plane of symmetry 9.3 Optical Activity chiral molecules bend plane-polarized light levorotatory (-) or dextrorotatory (+) the amount of rotation observed depends on sample concentration, pathlength, and wavelength of light used 9.4 Pasteur's Discovery of Enantiomers 9.5 Sequence Rules of Specifying Configuration Cahn-Ingold-Prelog (same as E-Z designation for double bonds) 1. highest atomic number first 2. look to first point of difference 3. multiple bonds do strange things. .. have lowest priority pointed back- clockwise is R, counterclockwise is S 9.6 Diastereomers diastereomers are stereoisomers that are not mirror images- opposite configurations at some but not all chirality centers (enan 9.7 Meso Compounds
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This note was uploaded on 04/26/2009 for the course CHEM 227 taught by Professor Santander during the Fall '08 term at Texas A&M.

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Chapter 9 - Chapter 9 Stereochemisty 9.1 Enantiomers and...

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