12-Bis(diisopropylphosphino)ethane Tags: Chemical Compound, Chemical Substance.12-Bis(diisopropylphosphino)ethane (dippe) is a commonly used bidentate ligand in coordination chemistry. This compound is similar to the ligand 12-bis(diphenylphosphino)ethane (dppe) with the substitution of isopropyl groups for phenyl groups. thumbnail IUPAC name 12-Ethanediylbis[di(propan-2-yl)phosphane] Learn more... Loading...