Disilanes Containing Two High-Coordinate Silicon Atoms Bridged by Carboxylate Ligands:  Synthesis, Structure, and Dynamic Behavior

Disilanes bearing four carboxylate ligands have a trigonal bipyramidal geometry around each silicon atom with two bridging carboxylate ligands with the apical Si−O axes, which are parallel to each other, in the crystalline state, while such a structure is in equilibrium with a tetrahedral structure in solution.