Question
How is Fischer projection formula of a molecule drawn? Explian by giving an example.

Answer

Fischer projection (cross) formula:
  • In this representation, a three dimensional molecule is projected on plane of paper.
  • Fischer projection formula can be drawn by visualizing the molecule with its main carbon chain vertical.
  • Each carbon on the vertical chain is represented by a cross. By convention, the horizontal lines of the cross represent bonds projecting up from the carbon and the vertical lines represent the bonds going below the carbon.
Fischer projection formula of a molecule along with its wedge formula is represented below:
Image

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