A new layered gallium phosphonate-oxalate hybrid material, [C2H10N2]0.5[Ga3(PO3CH3)4(C2O4)].H2O, denoted as MOP-1, was synthesized under mild hydrothermal conditions (150 °C) in the presence of ethylenediammonium ion (H2en)2+ as structure-directing agent. The compound was structurally characterized by single-crystal X-ray diffraction (SCXRD), Fourier transformed infra-red spectroscopy (FTIR), and thermogravimetric analysis (TGA). Its structure consists of gallium phosphonate double layers formed of GaO6 octahedra, GaO4 tetrahedra, and PO3CH3 groups sharing corners. The double layers are cross-linked by oxalate ligands to form a three-dimensional framework with intersecting channels where the ammonium ions and water molecules are located. The bridging oxalate ligand acts as a bidentate ligand to each Ga in octahedral coordination environment. Crystal data are as follows: Monoclinic P21/n (14), a = 8.7530(5) Å; b = 16.3427(8) Å; c = 14.7522(8) Å; β = 93.284(1)°, V = 2106.8(2) Å3 and Z = 4.Graphical AbstractThe manuscript describes the synthesis, crystal structure, infrared spectroscopy, and thermal stability of a novel hybrid inorganic-organic gallium phosphonate oxalate two-dimensional material.

中文翻译：

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新型层状草酸膦酸镓 [C2H10N2]0.5[Ga3(PO3CH3)4(C2O4)].H2O 的合成与表征

在乙二铵离子存在下，在温和的水热条件 (150 °C) 下合成了一种新的层状膦酸 - 草酸盐杂化材料 [C2H10N2]0.5[Ga3(PO3CH3)4(C2O4)].H2O，记为 MOP-1 (H2en)2+ 作为结构导向剂。通过单晶 X 射线衍射 (SCXRD)、傅里叶变换红外光谱 (FTIR) 和热重分析 (TGA) 对该化合物进行了结构表征。其结构由由 GaO6 八面体、GaO4 四面体和 PO3CH3 基团共享角形成的膦酸镓双层组成。双层通过草酸盐配体交联形成三维框架，其中铵离子和水分子位于交叉通道。桥接草酸盐配体作为八面体配位环境中每个 Ga 的双齿配体。晶体数据如下：单斜P21/n (14)，a = 8.7530(5) Å；b = 16.3427(8) Å；c = 14.7522(8) Å；β = 93.284(1)°, V = 2106.8(2) Å3 and Z = 4.Graphical Abstract 手稿描述了一种新型杂化无机-有机膦酸镓草酸盐二维材料的合成、晶体结构、红外光谱和热稳定性.