Two-Center, Three-Fragment Oxidative Addition

In this reaction a dihalo compound undergoes oxidative addition to two metal centers as represented in reaction 20  

The Formation or Stabilization of Other Novel Bridging Ligands 

This classification involves a catchall for the formation of unusual bridging ligands that have not been accounted for in previous sections. Clearly, some of the preceding sections involve reactions that create unusual bridging ligands. Here we are concerned with some other rather singular reactions that do not fall in the previous categories. 

Reaction of dpm with dimanganese decacarboryl produces the substitution product (ju-dpm)2Mn2(CO)6. On further heating to 140 (/it-dpm)2Mn2(CO)6 undergoes carbon monoxide loss. Some pertinent reaction chemistry is summarized in Equation 

The fluxional behavior of both (p-dpm)2Mn2(CO)6 and of (p-dopm)2Mn2(p.-CO)(CO)4 has been examined by both and CNMR spectroscopy. For (p-dpm)2Mn2(CO)6, global scrambling of carbon 

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Two-Center, Three-Fragment Oxidative Addition Reactions of Pdfdpm)3 (20)... 

Figure 5.18. Two center, three-fragment oxidative addition reactions of (dpm)3Pd2.

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