Polycrystalline diguanidinium hexafluoridogermanate (IV) was obtained by co-precipitation from solutions of diguanidinium carbonate and germanium dioxide in 48 % hydrogen fluoride. The [C(NH2)3]2[GeF6] structure was refined from single crystal X-ray diffractometer data: [C(NH2)3]2[TiF6] type, C2/m, a = 1276.67(8), b = 732.70(5), c = 616.37(5) pm, b = 114.497(5)°, wR = 0.0700, 1033 F 2 values, 53 variables. The trigonal planar [C(NH2)3]+ cations and the octahedral [GeF6]2− anions are condensed to double layers through strong H⋯F hydrogen bonds (208–213 pm H⋯F). The centers of gravity of the two building units have an antifluorite-like topology.

中文翻译：

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六氟锗酸二胍 (IV) – 一种具有反萤石拓扑结构的有机-无机杂化盐

多晶六氟锗酸二胍 (IV) 是通过碳酸二胍和二氧化锗在 48% 氟化氢中的溶液共沉淀获得的。[C(NH2）3]2[氟化镓6] 结构由单晶 X 射线衍射仪数据精炼：[C(NH2）3]2[氟化钛6] 类型，C2/米,A= 1276.67(8),乙= 732.70(5),C= 616.37(5) 下午，乙= 114.497(5)°，w右= 0.0700, 1033F 2值，53 个变量。三角平面 [C(NH2）3]+阳离子和八面体 [GeF6]2−阴离子通过强 H⋯F 氢键 (208–213 pm H⋯F) 凝聚成双层。两个建筑单元的重心具有类似反萤石的拓扑结构。