Under what highly specific, exceptional geometric condition can a biphenyl molecule successfully exh — Isomerism and Stereochemistry Chemistry Question

💡 Solution & Explanation

Typically, biphenyls with bulky ortho groups are forced into perpendicular planes to minimize severe electrostatic repulsion, completely preventing GI (though enabling Optical Isomerism). However, if there is negligible steric hindrance, the rings can achieve a co-planar geometry. In this flat co-planar state, if the terminal functional groups are different, the biphenyl system correctly exhibits GI.