Synthesis, structure and characterization of two new open-framework gallium phosphite-oxalates of varying dimensionality

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• 作者：Caixia Li ; Liangliang Huang ; Mingdong Zhou ; Jing Xia ; Hongwei Ma ; Shuliang Zang ; Li Wang
• 关键词：Inorganic&ndash ; organic hybrid ; Open-framework ; Solvent effect ; Gallium phosphite-oxalate
• 刊名：Journal of Solid State Chemistry
• 出版年：December, 2013
• 年：2013
• 卷：208
• 期：Complete
• 页码：86-92
• 全文大小：2078 K

文摘

Using N, N-dimethyl-piperazine as structure directing agent, two new gallium phosphite-oxalates [Ga₂(HPO₃)₂(H₂PO₃)₂(C₂O₄)](C₆N₂H₁₆) (I) and [Ga₂(HPO₃)₂(H₂PO₃)(C₂O₄)](C₆N₂H₁₆)_0.5 (II) have been synthesized under solvothermal and hydrothermal conditions, respectively and further characterized by powder X-ray diffraction, IR spectroscopy, TGA, ICP-AES and elemental analyses. Single crystal X-ray diffraction reveals that the striking feature of I and II is that they possess the same second building unit (SBU) Ga₂P₂ constructed from two GaO₆ octahedra and two [HPO₃^{2鈭?/sup>] pseudo-pyramids sharing oxygen atoms. However, due to the different connecting fashions of SBUs, [C₂O₄2鈭?/sup>] groups and [H₂PO₃鈭?/sup>] pseudo-pyramids, the final frameworks of them are distinctly different. Compound I shows 2D layered structures with 8-membered ring (8-MR) windows in the ab plane while compound II presents a 3D open-framework with 8-MR channels along the b axis.}