Dinuclear Reactivity Between the Two Metal Centers

In the field of metal-mediated selective and easier organic reactions, the present chapter focuses on the activation of at least one main step in the cleft of a dinuclear platform, in which a 1e-1e process occurs. This contribution emphasizes on the concepts that govern the conception of the coordination sphere in order to maintain the two metal centers at the right distance and which plays a central role in the electronic and steric effects. An analysis is done on systems operating in the absence of bridging ligands, particularly for the action of alkynes. A second part is devoted to the presence of ligands, which do not play a significant redox role. A third part concerns the use of redox-active bridging ligands. Many spectrometric characterizations, crystal structures, and theoretical calculations allow focusing this search on the main features that govern the reactivity of one metal center or the simultaneous two metal centers in the activation, selectivity, as well as original reactivity of a reactant or an intermediate in a catalytic step.