BINAP, or 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl, is a chiral diphosphine ligand extensively used in the field of catalysis. It is composed of two naphthalene rings connected through a single bond, with each ring bearing a diphenylphosphino group. The chiral nature of BINAP arises from the axial chirality of the naphthalene rings, making it an asymmetric ligand.
