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首页> 外文期刊>Crystallography reports >Synthesis and Crystal Structure of Novel Complex Phosphate Li_5Cu_2Al(PO_4)_4
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Synthesis and Crystal Structure of Novel Complex Phosphate Li_5Cu_2Al(PO_4)_4

机译：新型复合磷酸盐Li_5Cu_2Al（PO_4）_4的合成及晶体结构

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A new complex phosphate Li_5Cu_2Al(PO_4)_4 has been obtained by the flux method in the Cs–Li– Cu–V–P–O system. Its crystal structure has been determined by X-ray diffraction (R1 = 2.74%) to be as follows: sp. gr.Pi, a = 4.860(5) ?, b = 7.788(5) ?, c = 8.324(5) ?, α = 69.542(5)°, β = 90.016(5)°, γ = 75.318(5)°, Z = 1, and V = 284.2(4) ?~3. The compound under study has a dense structure and a threedimensional framework build up of [LiO_5], [AlO_6], [Cu/LiO_5], and [CuO_4] polyhedra and [PO_4] tetrahedra. A comparative crystal-chemical analysis of two isotypic compounds with a general formula Li_5Cu_2M(PO_4)_4 (M = Fe, Al) has been performed. Topological relations between the Na_2Mg_5(PO_4)_4 and Li_5Cu_2M(PO_4)_4 crystal structures, which are characterized by different cationic compositions, are revealed.
机译：在Cs–Li–Cu–V–P–O系统中，通过通量法获得了一种新的复合磷酸盐Li_5Cu_2Al（PO_4）_4。通过X射线衍射（R1 ＝ 2.74％）确定其晶体结构如下：sp。 gr.Pi，a = 4.860（5）？，b = 7.788（5）？，c = 8.324（5）？，α= 69.542（5）°，β= 90.016（5）°，γ= 75.318（5） °，Z ＝ 1，并且V ＝ 284.2（4）≤3。所研究的化合物具有致密的结构，并且由[LiO_5]，[AlO_6]，[Cu / LiO_5]和[CuO_4]​​多面体和[PO_4]四面体构成三维框架。已对两种通式为Li_5Cu_2M（PO_4）_4（M = Fe，Al）的同型化合物进行了比较晶体化学分析。揭示了以不同阳离子组成为特征的Na_2Mg_5（PO_4）_4和Li_5Cu_2M（PO_4）_4晶体结构之间的拓扑关系。

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