Wilen, Samuel H. Formerly, Department of Chemistry, City College of the City University of New York, New York, New York.
- Conformational analysis
- Stereocontrolled synthesis
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The study of the three-dimensional arrangement of atoms or groups within molecules and the properties which follow from such arrangement. Molecules that have identical molecular structures (that is, the same kind, number, and sequential arrangement of atoms) but differ in the relative spatial arrangement of component parts are stereoisomers. Inorganic and organic compounds exhibit stereoisomerism. Examples are structures (1) to (8). In the example, pairs of stereoisomers are related by permutation (transposition) of bonded atoms or groups. In structures (3) and (4), a single permutation of Cl and H about either C atom produces two stereoisomers. Atom C2 may be called a stereogenic atom (or a stereocenter).
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