For R-S systems {Cahn-Ingold-Prelog system} {CIP system}, at asymmetric carbon atom, place lowest-atomic-number bound atom straight-behind the plane, with the three other atoms facing observer. Mark highest-atomic-number atom and next highest. For atoms with same atomic number, use atomic mass. If two or more atoms are the same, go outward from chiral atom, applying same rules to farther atoms. Double bonds, triple bonds, and aromatic rings are like two or three bonds with atoms. If highest to next highest goes clockwise, compound is R or Rectus. If highest to next highest goes counterclockwise, compound is S or Sinister.
Physical Sciences>Chemistry>Organic>Bond Orientation>Isomer>Stereo
5-Chemistry-Organic-Bond Orientation-Isomer-Stereo
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0224