title: A 3D 12-ring zeolite with ordered 4-ring vacancies occupied by (H2O)2 dimers.
abstract: 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 Ge4 O4 vacancies inside the [4(6) .6(12) ] cages has been found in PKU-14, in which a unique (H2 O)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.
authors.affiliation: College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (P. R. China); Berzelii Center EXSELENT on Porous Materials, Department of Materials and Environmental Chemistry, Stockholm University, Stockholm 10691 (Sweden).
authors.forename: Jie
authors.initials: J
authors.lastname: Liang
authors.forename: Jie
authors.initials: J
authors.lastname: Su
authors.forename: Yingxia
authors.initials: Y
authors.lastname: Wang
authors.forename: Yanping
authors.initials: Y
authors.lastname: Chen
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Zou
authors.forename: Fuhui
authors.initials: F
authors.lastname: Liao
authors.forename: Jianhua
authors.initials: J
authors.lastname: Lin
authors.forename: Junliang
authors.initials: J
authors.lastname: Sun
keywords: X-ray diffraction; electron microscopy; porous materials; structure elucidation; zeolite analogues