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Stereochemistry Representations


Flying Wedge

Above the plane Below the plane Either direction

Useful for cis/trans isomers of cycloalkanes and tetrahedral geometry

Sawhorse Representation - for denoting rotamers

Newman Projections - showing eclipsed structures or conformational stress

  • The two atoms of interest are in line
  • The back atom is denoted as a circle
  • The front atom is denoted as a dot
  • Back substituents are slightly staggered for visibility

Fischer Projections

The vertical lines go in the page, while the horizontal lines come out of it

Rotating Fischer Projections

If you hold one substituent still, you can rotate all the other components in the fisher projection and it will remain the same molecule