A 3D 12-Ring Zeolite with Ordered 4-Ring Vacancies Occupied by (H2O)(2) Dimers

A germanate zeolite, PKU-14, with a three- dimensional large-pore channel system was structurally characterized by a combination of high-resolution powder X-ray diffraction, rotation electron diffraction, NMR, and IR spectroscopy. Ordered Ge4O4 vacancies inside the [4(6).6(12)] cages has been found in PKU-14, in which a unique (H2O)(2) dimer was located at the vacancies and played a structure-directing role. It is the first time that water clusters are found to be templates for ordered framework vacancies.Chemistry, MultidisciplinarySCI(E)EIPubMed0ARTICLEyxwang@pku.edu.cn; jhlin@pku.edu.cn; junliang.sun@pku.edu.cn4916097-161012