Three-Dimensional Open-Framework Germanate Built from a Novel Ge-13 Cluster and Containing Two Types of Chiral Layers
Journal
Crystal Growth & Design
Journal Volume
18
Journal Issue
2
Pages
928-933
Date Issued
2018
Author(s)
Huang, Shiliang
Yue, Huijuan
Chen, Yanping
Liu, Yu
Guan, Yuxiang
Zou, Xiaodong
Sun, Junliang
Abstract
A new open-framework germanate [Ge15O30(OH)4]·2(H2tren), denoted SU-69, was synthesized under hydrothermal conditions with tris(2-aminoethyl)-amine (tren) as a structure directing agent (SDA). SU-69 crystallizes in a monoclinic space group (C2/c, No. 15) with a = 20.2656(7) Å, b = 11.6250(4) Å, c = 18.5602(10) Å, and β = 90.528(4)°. The framework of SU-69 is built from a novel Ge13O27(OH)2 (Ge13) cluster with two additional GeO3(OH) tetrahedra. Two types of chiral 3,6-net building layers are found in the framework, which alternately stack and connect to form a three-dimensional achiral framework with a two-dimensional 10 × 12-ring channel system. The SDA molecules interact with the framework via H-bonds. The thermal stability of as-synthesized SU-69 has also been investigated.
Type
journal article