A series of vanadate compounds Ba₃M(V₂O₇)₂ (M = Co, Mn, Mg, or Zn) are synthesized by a conventional high-temperature solid-state reaction. Four compounds are found to exhibit a similar structure, which all crystallize in the monoclinic system of space group P2₁/c. V⁵⁺ ions are tetrahedrally coordinated, forming corner-shared (V₂O₇)^4– groups, while M²⁺ ions are octahedrally coordinated, forming edge-shared [M₂O₁₀] dimers. Isolated {M₂V₈O₂₈}_∞ clusters composed of [M₂O₁₀] dimer and (V₂O₇)^4– groups form a pseudo-one-dimensional chain running along the a-axis. Magnetic measurements confirm that both Ba₃Co(V₂O₇)₂ and Ba₃Mn(V₂O₇)₂ show antiferromagnetic interaction exchanges in the systems, while luminescence measurements confirm that Ba₃Mg(V₂O₇)₂ and Ba₃Zn(V₂O₇)₂ have a broad emission band from 400 to 650 nm under 256 nm UV irradiation at room temperature.

中文翻译：

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具有边缘共享的[M ₂ O ₁₀ ]二聚体结构的钒酸盐化合物Ba ₃ M（V ₂ O ₇）₂（M = Co，Mn，Mg或Zn）家族的合成与表征

通过常规的高温固态反应合成了一系列钒酸盐化合物Ba ₃ M（V ₂ O ₇）₂（M = Co，Mn，Mg或Zn）。发现四种化合物具有相似的结构，它们都在空间群P 2 ₁ / c的单斜晶系中结晶。V ⁵⁺离子四面体配位，形成角共享（V ₂ O ₇）^4–基团，而M ²⁺离子八面体配位，形成边缘共享的[M ₂ O ₁₀ ]二聚体。隔离{M ₂ V ₈由[M ₂ O ₁₀ ]二聚体和（V ₂ O ₇）^4–组组成的O ₂₈ } _∞簇形成沿a轴延伸的伪一维链。磁测量证实，Ba ₃ Co（V ₂ O ₇）₂和Ba ₃ Mn（V ₂ O ₇）₂在系统中均显示出反铁磁相互作用，而发光测量结果证实，Ba ₃ Mg（V ₂ O ₇）₂和Ba ₃ Mg（V ₂ O ₇）₂巴₃ Zn（V ₂ O ₇）₂在室温下在256 nm紫外线照射下具有400至650 nm的宽发射带。