In the framework of expanding the range of copper‐based compounds in the pyroxene family, we have synthesized at high pressure and high temperature a powder containing a mixture of a new phase with stoichiometry Sr₅CuGe₉O₂₄ having two identified impurity phases. Electron crystallography showed that the new phase crystallizes in the monoclinic space group P2/c, with unit‐cell parameters a = 11.8 Å, b = 8.1 Å, c = 10.3 Å and β = 101.3°. We applied the recently developed low‐dose electron diffraction tomography method to solve the structure by direct methods. The obtained structure model contains all 9 independent cation positions and all 13 oxygen positions. A subsequent refinement against powder X‐ray diffraction data ascertained the high quality of the structure solution, in particular, the unusual structural arrangement that there are three different environments for Ge in this phase.

中文翻译：

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在高压和高温下合成的新Sr5CuGe9O24相中的三种不同的Ge环境

在扩大辉石家族中铜基化合物的范围的框架内，我们在高压和高温下合成了一种粉末，该粉末包含具有两个化学成分的化学计量比为Sr ₅ CuGe ₉ O ₂₄的新相混合物。电子晶体学表明，新相在单斜空间群P 2 / c中结晶，晶胞参数a = 11.8Å，b = 8.1Å，c= 10.3Å和β= 101.3°。我们应用了最近开发的低剂量电子衍射断层扫描方法，通过直接方法来解决结构。所获得的结构模型包含所有9个独立的阳离子位置和所有13个氧位置。随后对粉末X射线衍射数据进行的改进确定了结构溶液的高质量，尤其是该阶段Ge具有三种不同环境的特殊结构布置。