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首页> 外文期刊>Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics >RE(SO4)[B(OH)(4)](H2O), RE(SO4)[B(OH)(4)](H2O)(2), and RE(SO4)[B(OH)(4)](H2O)center dot H2O: Rare-Earth Borate-Sulfates Featuring Three Types of Layered Structures
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RE(SO4)[B(OH)(4)](H2O), RE(SO4)[B(OH)(4)](H2O)(2), and RE(SO4)[B(OH)(4)](H2O)center dot H2O: Rare-Earth Borate-Sulfates Featuring Three Types of Layered Structures

机译:Re(SO4)[B(OH)(4)](H 2 O),RE(SO4)[B(OH)(4)](H 2 O)(2),RE(SO4)[B(OH)(4) ](H2O)中心点H2O:稀土硼酸盐,具有三种类型的层状结构

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Using hydrothermal reactions, three series of rare-earth borate-sulfates, namely, RE(SO4)[B(OH)(4)](H2O) (RE = La (1), Sm (2), Eu (3)), RE(SO4)[B(OH)(4)] (H2O)(2) (RE = Pr (4), Nd (5), Sm (6), Eu (7), Gd (8)), and RE(SO4)[B(OH)(4)] (H2O)center dot H2O (RE = Tb (9), Dy (10), Ho (11), Er (12), Tm (13), Yb (14), Lu (15), Y (16)), have been synthesized, which represent the first rare-earth borate sulfate mixed-anion compounds. All these compounds possess the same fundamental building anionic units of SO4 and B(OH)(4) tetrahedra; however, they exhibit three different types of two-dimensional (2D) layered structures composed of 1D RE-B-O and RE-S-O chains. The rare-earth borate chains are similar in all compounds, while the rare-earth sulfate chains differ in each type of compound due to the various coordination modes of sulfate groups. On the basis of the measured UV-vis diffuse reflectance spectra, the optical band gaps of compounds 2, 3, 6, and 7 are estimated to be 4.66, 4.53, 4.62, and 4.50 eV, respectively. Luminescence studies show that compounds 2, 3, 6, and 7 exhibit strong emission in the orange or red regions. Furthermore, thermal analysis and magnetic susceptibility measurements for these four representative compounds have also been performed.
机译:使用水热反应,三系列稀土硼酸硫酸盐,即Re(SO 4)[B(OH)(4)](H 2 O)(RE = LA(1),SM(2),EU(3)) ,Re(SO4)[B(OH)(4)](H2O)(2)(RE = Pr(4),Nd(5),SM(6),Eu(7),Gd(8)),和Re(SO4)[B(OH)(4)](H2O)中心点H2O(RE = TB(9),DY(10),HO(11),ER(12),TM(13),YB(14已经合成了Lu(15),Y(16)),其代表了第一稀土硼酸盐硫酸盐混合阴离子化合物。所有这些化合物都具有同样的基本构建阴离子单位,SO4和B(OH)(4)四面体;然而,它们表现出由1D RE-B-O和RE-S-O链组成的三种不同类型的二维(2D)层结构。在所有化合物中稀土硼酸盐链类似,而由于硫酸盐基团的各种配位模式,稀土硫酸盐链在每种类型的化合物中不同。基于测量的UV-VI扩散反射光谱,化合物2,3,6和7的光带间隙分别估计为4.66,4.53,4.62和4.50eV。发光研究表明,化合物2,3,6和7表现出橙色或红地区的强发射。此外,还已经进行了这四种代表性化合物的热分析和磁性敏感性测量。

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