Gallepins. Neutral gallium analogues of the tropylium ion: Synthesis, structure, and aromaticity
The synthesis of the first gallepin derivative, the neutral gallium-based analogue of the tropylium ion, is described. The title compound, containing two gallepin moieties linked by a TMEDA unit, was characterized by H-1 NMR, elemental analyses, and single-crystal X-ray diffraction. In addition, computations provide insight into the nature of the bonding and aromaticity of this novel compound.