THE OXYGENATION OF THE ELECTRON-RICH TRIPLE BOND IN THE COMPLEXES [RE2X4(MU-DPPM)2][X = CL OR BR-DPPM = BIS(DIPHENYLPHOSPHINO)METHANE] - MULTIELECTRON REDOX BEHAVIOR INVOLVING RETENTION OF THE RE2X4P4 UNIT

The reactions of the triply bonded complexes [Re2X4(mu-dppm)2] (X = Cl or Br; dppm = Ph2PCH2PPh2) with O2 proceed to give the products [Re2(mu-O)(mu-X)(O)X3(mu-dppm)2] and [Re2(mu-O)(O)2X4(dppm)2] in high yield in which net four- and six-electron redox reactions have occurred and the integrity of the ligand sets of the precursor complex is preserved.