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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Na_2Ge_3P_3 and Na_5Ge_7P_5 Comprising Heteroatomic Polyanions Mimicking the Structure of Fibrous Red Phosphorus
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Na_2Ge_3P_3 and Na_5Ge_7P_5 Comprising Heteroatomic Polyanions Mimicking the Structure of Fibrous Red Phosphorus

机译：na_2ge_3p_3和na_5ge_7p_5包含杂草的多阴离子模仿纤维红色磷的结构

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Recently lithium phosphidogermanates were discovered as fast lithium ion conductors for potential usage as solid electrolytes in all solid-state batteries. In this context we also studied sodium phosphidogermanates since sodium ion conductors are of equal interest. Na_2Ge_3P_3 and Na_5Ge_7P_5 both crystallize in the monoclinic space group C2/m with unit cell parameters of a = 17.639(4) ?, b = 3.6176(7) ?, c = 11.354(2) ?, β = 92.74(3)° and a = 16.168(5) ?, b = 3.6776(7) ?, c = 12.924(4) ?, β = 91.30(3)°, respectively. Both show linearly condensed 9-atom cages of four Ge / five P and five Ge / four P atoms, respectively. These cages contain Ge–Ge bonds and form one-dimensional tubes by sharing three atoms. The parallel tubes are paired through further Ge–Ge bonds. Both structures are closely related to the one of the fibrous type of crystalline red phosphorus. A comparison with other compounds such as NaGe_3P_3 and GeP reveals recurring structural motifs with a broad variety of connection patterns. According to the general formula Na_(4+x)Ge_(6+x)P_(6–x) with x = 0 and 1, the two novel structures hint for the possibility of a variable Na content which might allow Na ion mobility.
机译：最近，人们发现磷化锗酸锂是一种快速锂离子导体，在所有固态电池中都有可能用作固体电解质。在这方面，我们还研究了亚磷酸锗酸钠，因为钠离子导体也同样重要。Na_2Ge_3P_3和Na_5Ge_7P_5均在单斜空间群C2/m中结晶，晶胞参数a=17.639（4）、？，b=3.6176（7）？，c=11.354（2）？，β=92.74（3）°和a=16.168（5）？，b=3.6776（7）？，c=12.924（4）？，β分别为91.30（3）°。两者都显示出分别由四个Ge/5个P和五个Ge/4个P原子组成的线性凝聚9原子笼。这些笼中含有锗-锗键，并通过共享三个原子形成一维管。平行管通过进一步的Ge–Ge键配对。这两种结构都与结晶红磷的纤维型结构密切相关。与其他化合物（如NaGe_3P_3和GeP）的比较揭示了具有多种连接模式的重复结构基序。根据x=0和1的通式Na_4+x）Ge_6+x）P_6-x，这两种新结构暗示了可能存在允许Na离子迁移的可变Na含量。

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