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首页> 外文期刊>Inorganic Chemistry Communications >Solvothermal synthesis, structure and characterization of ID chain and 2D layered rare earth sulfates in the presence of cyclic diamines
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Solvothermal synthesis, structure and characterization of ID chain and 2D layered rare earth sulfates in the presence of cyclic diamines

机译：环状二胺存在下溶剂热合成ID链和2D层状稀土硫酸盐的结构，表征

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摘要

Three new rare earth sulfates were solvothermally synthesized and characterized by X-ray diffraction elemental analysis, thermogravimetric, and photoluminescent studies. Compounds [(NH4(C6N2H_(12))] [Ln(SO4)3] (Ln=Eu, 1; Gd, 2) were synthesized in the solvent of DMA with l,4-diazabicydo-[2,2,2]-octane (DABCO) as a structure-directing agent (SDA), which are isomorphous and adopt a two-dimensional layered structure with 8-membered rings made of LnO8 polyhedra and SO4 tetrahedra. The protonated DABCO molecules lie between the layers while the ammonium cations are located within the layers. Compound [(C4N2H_(12))_(1.5)][Er(SO4)3(H2O)] (3) was synthesized in the mixed solvent of water and ethanol with pipera-zine (PIP) as a SDA. The structural analyses showed that 3 is constructed from ErO9 polyhedra and SO4 tetrahedra to form a one-dimensional chained structure with edge-sharing 4-membered rings. The protonated PIP molecules and coordination H2O molecules form extensive intra-and inter-chain hydrogen bonding to generate a 3-dimensional supramolecular network. The three compounds exhibit good thermal stability. Compound 1 exhibits intense red luminescence upon excitation owing to the Eu~(3+) ion.
机译：溶剂热合成了三种新的稀土硫酸盐，并通过X射线衍射元素分析，热重分析和光致发光研究对其进行了表征。化合物[（NH4（C6N2H_（12））] [Ln（SO4）3]（Ln = Eu，1; Gd，2）在具有1,4-二氮杂双-[2,2,2]的DMA溶剂中合成辛烷（DABCO）作为结构导向剂（SDA），是同构的，具有二维层状结构，由LnO8多面体和SO4四面体组成的8元环，质子化的DABCO分子位于层之间，而铵阳离子位于这些层中。[[C4N2H_（12））_（1.5）] [Er（SO4）3（H2O）]（3）在水和乙醇与哌嗪（PIP）的混合溶剂中合成结构分析表明，由ErO9多面体和SO4四面体构成3，形成具有边共享4元环的一维链状结构，质子化的PIP分子和配位的H2O分子形成广泛的内部和内部结构。链氢键形成一个三维超分子网络，这三种化合物表现出良好的热稳定性，化合物1表现出强烈的红色发光由于Eu〜（3+）离子引起的Pon激发。

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