CHEM 281 Study Guide - Midterm Guide: Heterolysis (Chemistry), Trifluoromethanesulfonic Anhydride, Methanesulfonyl Chloride
4 Dec 2013
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Diasteriomer isomer different compounds that have the same molecular formula constitutional isomer: different connectivity eg. butane & 2-methypropane have the molecular formula c4h10 stereoisomer: same connectivity of atoms, but a different arrangement of atoms in space. Enantiomer molecules that are non-superposable mirror images eg. 2-butanol can be represented both ways. Diasteriomer molecules that are not mirror images eg. cis and trans isomers trans highest priority groups are on opposite sides of the double bond. A chiral molecule cannot be superposed on it"s mirror image. This can have biological implications cis highest priority groups are on the same side of the double bond. Chiral center: when a carbon molecule is bonded to 4 different substituents. Stereogenic center: tetrahedral: sp3 hybridized carbon (4 individual single bonds) chirality centers trigonal planar: sp2 hybridized carbon (1 single bond and. 2 double bonds) cis and trans molecules. For chiral centers, the r/s configuration is used label each substituent from highest to lowest priority.
