(C₈H₂₂N₄Zn)₂Ge₇O₁₄(OH)F₃: A One-Dimensional Zinc Germanate Containing Hollow Columns with an 18-Membered Window

A new zinc germanate incorporating a tetradentate amine ligand has been synthesized by the solvothermal method and structurally characterized by single-crystal X-ray diffraction, solid-state ¹⁹F NMR spectroscopy, thermal analysis, and IR spectroscopy. Its structure contains close-packed hollow columns with an 18-membered window, each of which contains six one-dimensional chains formed of Ge₇X₁₉ (X = O, OH, F) clusters connected to zinc complexes.