Synthesis and structure of KBGe2O6: The first chiral zeotype borogermanate with 7-ring channels

Zhi En Lin, Jie Zhang, Guo Yu Yang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

82 Citations (Scopus)

Abstract

Among the known zeolite topologies, odd rings are rare with the exception of 5-ring. We report here the hydrothermal synthesis and structural characterization of a novel compound, KBGe2O6, the first germanate-based zeotype material with 7-ring channels. It crystallized in the orthorhombic system, space group P212121 (No. 19), a = 4.8037(3) Å, b = 10.2063(7) Å, c = 10.7402(10) Å, V = 526.57(5) Å3, Z = 3. The framework topology of this compound is previous unknown with the vertex symbol 4·6·4·6· 6·72(vertex1), 4·6·4·6·6·72(vertex2), and 6·6·6·6·62· 72(vertex3). It is worth noting that the structure of the compound is chiral containing helices condensed from GeO4 tetrahedra, which arrange around 21 screw axes. Furthermore, the K+ ions within the channels are mobile and can be partially ion-exchanged with Na+ at room temperature.

Original languageEnglish
Pages (from-to)1797-1799
Number of pages3
JournalInorganic Chemistry
Volume42
Issue number6
DOIs
Publication statusPublished - 24 Mar 2003
Externally publishedYes

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