Diphenic acid


Diphenic acid is an organic compound with the formula 2. It is the most studied of several isomeric dicarboxylic acids of biphenyl. It is a white solid that can be prepared in the laboratory from anthranilic acid via the diazonium salt. It is the product of the microbial action on phenanthrene.
The compound forms a variety of coordination polymers. It also exhibits atropisomerism.