stéréogène
Stéréogène is a term used in stereochemistry to describe an atom, group of atoms, or a region within a molecule that can exist in two or more spatial arrangements that are not superimposable. These different spatial arrangements are called stereoisomers. The most common example of a stéréogène center is a chiral carbon atom, which is a carbon atom bonded to four different atoms or groups. When such a center exists, the molecule can exist as a pair of enantiomers, which are non-superimposable mirror images.
The presence of stéréogène centers dictates the three-dimensional structure of a molecule. This three-dimensional structure is
Beyond chiral carbon atoms, other types of stéréogène centers exist, including chiral nitrogen atoms in certain