The crystal structure of a complex barium, aluminium, copper(II) fluoride: Ba4Cu2Al3F21

European Journal of Solid State and Inorganic Chemistry Pub Date : 1998-01-01 DOI:10.1016/S0992-4361(98)80013-1

N. Dupont, M. Samouël, P. Gredin, A. de Kozak

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引用次数: 5

Abstract

Ba₄Cu₂Al₃F₂₁ is orthorhombic : a = 5.299(1) Å, b = 7.318(1) Å, c = 41.529(7) Å, Z = 4. The crystal structure was solved in the space group P2₁2₁2₁ (n^o19) from X-ray single crystal data using 5682 unique reflections (3698 with F_O/σ(F) > 4). It consists in a succession along c of 8 layers of 2 different types of sheets. The first layer, formulated [Cu₂AlF₁₁]⁴⁻ in which copper-fluorine octahedra are linked by edges to form infinite distorted chains connected together by aluminium-fluorine octahedra, is followed by two [Al₂F₁₀]⁴⁻ layers of infinite cischains of aluminium-fluorine octahedra linked by two vertices and another [Cu₂AlF₁₁]⁴⁻ layer. These 4 layers are doubled along c by one of the screw-axes 2₁. The barium ions, 12-coordinated, are inserted between the sheets.

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一种复杂的钡、铝、氟化铜(II)的晶体结构:Ba4Cu2Al3F21

Ba4Cu2Al3F21是正交的:a = 5.299(1) Å， b = 7.318(1) Å， c = 41.529(7) Å， Z = 4。利用5682个唯一反射(3698,FO/σ(F) >)，从x射线单晶数据中求解空间群P212121 (no19)中的晶体结构;它由2种不同类型的8层连续组成。第一层为[Cu2AlF11]4 -，其中铜氟八面体通过边缘连接形成无限扭曲链，由铝氟八面体连接在一起，随后是两个[Al2F10]4 -层，由两个顶点连接的铝氟八面体的无限顺链和另一个[Cu2AlF11]4 -层。这4层沿着c被其中一个螺旋轴21加倍。12配位的钡离子被插入薄片之间。

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European Journal of Solid State and Inorganic Chemistry

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