A Stable Salt of the Tris(ethene)silver Cation: Structure and Characterization of [Ag(η<sup>2</sup>‐C<sub>2</sub>H<sub>4</sub>)<sub>3</sub>]<sup>+</sup>[Al{OC(CF<sub>3</sub>)<sub>3</sub>}<sub>4</sub>]<sup>−</sup>
Angewandte Chemie