The molecule dimethylphosphinoethane [(CH3)2PCH2- CH2P(CH3)2, which is abbreviated dmpe] is used as a ligand for some complexes that serve as catalysts. A dmpe, and compare it with ethylenediammine as a coordinating ligand. (b) What is the oxidation state of Mo in Na2[Mo(CN)2(CO)2(dmpe)]? (c) Sketch the structure of [Mo(CN)2(CO)2 (CO)2 (dmpe)]2- the ion, including all the possible isomers.