Atropisomers are a type of stereoisomer that arise from the restricted rotation around a single bond, typically due to steric hindrance. This restricted rotation can lead to two or more distinct spatial arrangements of atoms that cannot interconvert freely without breaking a bond. The term "atropisomer" is primarily used in organic chemistry, particularly in the context of certain biaryl compounds where the rotation around the single bond connecting two aromatic rings is hindered.
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