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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Synthesis, Properties, and Crystal Structure of Cu_3Mo_8O_(23)X_2 (X = Cl, Br, I)
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Synthesis, Properties, and Crystal Structure of Cu_3Mo_8O_(23)X_2 (X = Cl, Br, I)

机译:Cu_3Mo_8O_(23)X_2(X = Cl,Br,I)的合成,性质和晶体结构

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摘要

Single crystals of the Cu_3Mo_8O_(23)X_2 compounds were grown by chemical transport reactions at the lower temperature of a gradient 873-823 K without extra transport agent (auto transport). As DTA/TG measurements indicate, the gaseous compounds, necessary for chemical transport reactions, are formed by partial decomposition of Cu_3Mo_8O_(23)X_2 at 873 K. Cu_3Mo_8O_(23)Br_2 crystallizes with the orthouombic space group Pbcm (a = 4.021(1), b = 22.978(2), c = 21.673(2) A, Z = 4). The crystal structure consists of pentagonal columns _infinity~1[Mo_6O_7O_(20/2)] linked by additional MoO_(6/2) octahedra. All the polyhedra(pentagonal bipyramide, octahedra) are distorted. Infinite chains _infinty~1[Cu_3Br_2] along [100] are arranged in tunnels with s-like square shape, left open by the pentagonal columns. Cu_3Mo_8O_(23)Cl_2 (a = 4.010(1), b = 22.942(2), c = 21.639(2) A) and Cu_3Mo_8O_(23)I_2 (a = 4.052(1), b = 23.075(2), c = 21.719(2) A) are isotypic.
机译:Cu_3Mo_8O_(23)X_2化合物的单晶通过化学转运反应在873-823 K的较低温度下通过化学转运反应生长,无需额外的转运剂(自动转运)。正如DTA / TG测量所表明的那样,化学传递反应所需的气态化合物是通过在873 K处Cu_3Mo_8O_(23)X_2的部分分解而形成的.Cu_3Mo_8O_(23)Br_2以正交空间群Pbcm(a = 4.021(1 ),b = 22.978(2),c = 21.673(2)A,Z = 4)。晶体结构由五角形列_infinity〜1 [Mo_6O_7O_(20/2)]与附加的MoO_(6/2)八面体链接。所有的多面体(五角联吡啶,八面体)都变形了。沿[100]的无限链_infinty〜1 [Cu_3Br_2]排列成s形正方形的隧道,被五边形的圆柱敞开。 Cu_3Mo_8O_(23)Cl_2(a = 4.010(1),b = 22.942(2),c = 21.639(2)A)和Cu_3Mo_8O_(23)I_2(a = 4.052(1),b = 23.075(2),c = 21.719(2)A)是同型的。

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