Biphenyls are compounds consisting of two benzene rings connected by a single bond. In certain biphenyls, bulky substituents on the ortho positions of the rings can prevent free rotation around the bond, locking the rings in different...

Stereoisomerism refers to isomers that have the same molecular formula and connectivity but differ in the three-dimensional arrangement of their atoms. This type of isomerism includes both geometrical isomers and optical isomers....

For this one we will have to be able to interpret IUPAC nomenclature to draw molecular structure, including absolute configuration using the Cahn-Ingold-Prelog convention.