https://doi.org/10.1351/goldbook.C01093
@[email protected] @[email protected] or @[email protected] (or hetero-analogues) which differ in the positions of atoms (or groups) relative to a reference plane: in the cis[email protected]@ the atoms are on the same side, in the @[email protected][email protected]@ they are on opposite sides.
C01093.png