C2-Symmetric ligands

C₂-symmetric ligands are a type of ligand that possesses a specific symmetry—specifically, a two-fold rotational symmetry. This means that if the ligand is rotated by 180 degrees around a specific axis, it appears the same as it did before the rotation. In molecular terms, this symmetry is represented as C₂, which is one of the axes in the classification of molecular symmetry.