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Updated: Jun 26, 2026
Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups
Published on: February 11, 2012
(NH4)2ZrGe3O9: a new microporous zirconogermanate
Zhicheng Liu1, Linhong Weng, Zhenxia Chen
1Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China.
Abstract:
A new microporous zirconogermanate, diammonium zirconium trigermanate, (NH(4))(2)ZrGe(3)O(9) (FDZG-2), analogous to wadeite (K(2)ZrSi(3)O(9)), was hydrothermally synthesized using ZrO(NO(3))(2).2H(2)O as the source of zirconium and 1,4-diaminobutane as a structure-directing agent. Single-crystal X-ray diffraction analysis reveals that the framework structure is built up of cyclic trigermanate units crosslinked by ZrO(6) octahedra. The Zr atom lies at a site with -3 symmetry and the unique N atom of the ammonium ion lies at a site with threefold symmetry. Large cages are observed, with two NH(4)(+) cations in each. The structure contains intersecting six- and three-membered ring (6MR and 3MR) channels, but only the 6MR channels can accommodate the NH(4)(+) ions.
