Azo compounds contain a characteristic double bond and are known to exhibit geometrical isomerism. W — Isomerism and Stereochemistry Chemistry Question

💡 Solution & Explanation

For geometrical isomers occurring in systems containing nitrogen atoms, such as oximes and Azo compounds ($Ph-N=N-Ph$), the IUPAC-accepted stereochemical descriptors are 'Syn' and 'Anti'. If the two phenyl (or other attached) groups are spatially located on the same side of the $N=N$ double bond, it is the 'Syn' form; if on opposite sides, it is the 'Anti' form.