Fischerprojekció

Fischer projection is a two-dimensional representation of a three-dimensional organic molecule. It is particularly useful for depicting stereoisomers, such as enantiomers and diastereomers, of chiral molecules. Developed by Emil Fischer, this method simplifies the visualization of the spatial arrangement of atoms around a chiral center.

In a Fischer projection, the carbon chain is typically drawn vertically, with the most oxidized carbon atom at the top. Horizontal lines represent bonds projecting out of the plane of the page towards the viewer, while vertical lines represent bonds projecting into the plane of the page away from the viewer. The intersection of horizontal and vertical lines represents a chiral carbon atom. Substituents attached to the chiral center are arranged on these lines.

This convention allows chemists to easily compare the stereochemistry of different molecules. For example, two Fischer projections that are mirror images of each other represent enantiomers, which are stereoisomers that are non-superimposable mirror images. If two Fischer projections are not mirror images but still have the same molecular formula and connectivity, they are diastereomers. The Fischer projection is a standard tool in organic chemistry for understanding and communicating stereochemical information.