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首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >Synthesis and crystal structure of anhydrous Na[MnO4]
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Synthesis and crystal structure of anhydrous Na[MnO4]

机译:无水Na [MnO4]的合成及晶体结构

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摘要

There are numerous reports in the literature about the amount of hydrate water in sodium permanganate, which is said to be between one half and three water molecules per Na[MnO4]. Because no structural descriptions of the hydrate and the anhydrous compound can be found yet, this work reports the synthesis of anhydrous Na[MnO4] via the Muthmann method and its crystal structure. Na[MnO4] crystallizes as dark purple needles in the monoclinic space group P2(1) with a = 572.98(5), b = 842.59(7), c = 715.47(6) pm, beta = 92.374(3)degrees and Z = 4. As such and with its isotype to Ag[MnO4], Na[MnO4] completes the series of anhydrous alkali-metal permanganates, comprising Li[MnO4] (orthorhombic, Cmcm, Cr[VO4] type) and the isostructural heavier congeners A[MnO4] (A = K, Rb, Cs; orthorhombic, Pnma, Ba[SO4] type).
机译:关于高锰酸钠中水合物水的数量,文献中有许多报道,据称每Na [MnO4]的水分子含量在一半至三个之间。由于尚未找到水合物和无水化合物的结构描述,因此这项工作报道了通过Muthmann方法合成无水Na [MnO4]及其晶体结构。 Na [MnO4]在单斜空间群P2(1)/ n中结晶为深紫色针状结晶,a = 572.98(5),b = 842.59(7),c = 715.47(6)pm,β= 92.374(3)度Na [MnO4]并由此与Ag [MnO4]同型,完成了一系列无水碱金属高锰酸盐系列,包括Li [MnO4](斜方晶系,Cmcm,Cr [VO4]型)和同构结构较重的同类物A [MnO4](A = K,Rb,Cs;正交晶,Pnma,Ba [SO4]型)。

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