GENERATION AND CHARACTERIZATION OF Mn(CO)3L2 (L2=R2PC2H4PR2; R=Et, Ph) AND ITS USE IN THE GENERATION OF ORGANIC RADICALS

Article abstract of DOI:10.1016/0022-328X(86)80257-1

Irradiation of Mn2(CO)10 with the bidentate phosphine 1,2-bis(diethylphosphino)ethane (depe) rapidly yields 2 and Mn(CO)3depe.The two species are in equilibrium in solution, with the dimer present in larger amounts: 2 <-/-> 2Mn(CO)3depe.The formation of Mn(CO)3depe proceeds much more readily than the formation of Mn(CO)3L2 (L=monodentate phosphine complexes).In addition, no side-products are formed as is the case with the monodentate ligands.The ease with which Mn(CO)3depe can be generated makes it a convenient reagent for the synthesis of organic radicals beacuse the complex abstracts halogen atoms from alkyl and aryl halides: Mn(CO)3depe + RX -> Mn(CO)3(depe)X + <*>.