A Polyoxo–Polyolato Complex of Tantalum (<scp>V</scp>) with a Double Adamantane‐Like [Ta₇O₁₂]¹¹⁺ Core

Abstract

Only corner-sharing between the seven TaO6 octahedra is observed in the neutral complex [H−11Ta7O12(tdci)6] (tdci = 1,3,5-trideoxy-1,3,5-tris(dimethylamino)-cis-inositol). The structure on the right (only one tdci ligand is illustrated) depicts the Ta7O30 double adamantane core. In contrast to previously described structures of polyoxometalate ions, which have a predominantly edge-shared framework, this compound has an unusually open structure.