PKU-10: A New 3D Open-Framework Germanate with 13-Ring Channels

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• 作者：Jie Su ; Yingxia Wang ; Zheming Wang ; Fuhui Liao ; Jianhua Lin
• 刊名：Inorganic Chemistry
• 出版年：2010
• 出版时间：November 1, 2010
• 年：2010
• 卷：49
• 期：21
• 页码：9765-9769
• 全文大小：839K
• 年卷期：v.49,no.21(November 1, 2010)
• ISSN：1520-510X

文摘

PKU-10, a germanate with the formula [(CH₃)₄N]₃Ge₁₁O₁₉(OH)₉, is synthesized under hydrothermal conditions, and its structure is determined by single-crystal X-ray diffraction data. PKU-10 possesses 3D intersected 13-ring channels and presents a new 6-connectedness linkage mode of the Ge₇ cluster, T³P²O, forming a pcu topological network. Each Ge₇ cluster is, in fact, surrounded by eight Ge₇ clusters in a nearly perfect cube because the hydrogen bonds between Ge₇ clusters are also taken into account. The structure-directing agent tetramethylammonium (TMA⁺) ions, locating in the channels, can be partially exchanged by Li⁺ with retention of the germanate framework. The germanate framework collapses with decomposition of the TMA⁺ ions at temperatures higher than 240 °C.