Deep blue, prism-shaped, X-ray diffraction quality single crystals of a new quaternary rubidium cobalt germanate, exact composition Rb2Co1.85Ge1.15O6, were grown by soaking a pre-reacted polycrystalline powder in a molten RbCl/RbF eutectic flux (melting point = 546 °C) at 700 °C in a silver reaction vessel. The complex was characterized by single crystal X-ray diffraction and its elemental composition was semi-quantitatively confirmed by energy dispersive spectroscopy (EDS). Rb2Co1.85Ge1.15O6 crystallizes in the noncentrosymmetric orthorhombic space group C2221 with lattice parameters a = 6.5971(2) Å, b = 9.8791(3) Å and c = 10.8819(3) Å in the K2ZnSi2O6 structure type. The crystal structure consists of a three-dimensional network, composed of Co and mixed Co/Ge tetrahedra, and features cavities occupied by Rb cations. X-ray diffraction quality single crystals of a novel rubidium cobalt germanate, Rb2Co1.85Ge1.15O6, were grown by soaking a pre-reacted powder, targeted for preparing Rb4.51Co2.35Ge5.10O15F1.96, in a RbCl-RbF eutectic melt at 700 °C. The complex was characterized by single crystal X-ray diffraction and found to crystallize in the orthorhombic space group C2221 in the K2ZnSi2O6 structure type.

中文翻译：

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Rb2Co1.85Ge1.15O6：第一第四纪非中心对称铷钴锗酸盐

通过将预反应的多晶粉末浸泡在熔融的 RbCl/RbF 共晶助熔剂（熔化点 = 546 °C) 在 700 °C 下在银反应容器中。该配合物通过单晶 X 射线衍射表征，其元素组成通过能量色散光谱 (EDS) 半定量确认。Rb2Co1.85Ge1.15O6 在非中心对称正交空间群 C2221 中结晶，晶格参数 a = 6.5971(2) Å, b = 9.8791(3) Å 和 c = 10.8819(3) Å，K2ZnSi2O6 结构类型。晶体结构由三维网络组成，由 Co 和混合 Co/Ge 四面体组成，并具有由 Rb 阳离子占据的空腔。新型铷钴锗酸盐 Rb2Co1.85Ge1.15O6 的 X 射线衍射质量单晶通过在 RbCl-RbF 共晶熔体中浸泡预反应粉末生长，旨在制备 Rb4.51Co2.35Ge5.10O15F1.96在 700°C。该配合物通过单晶 X 射线衍射表征，发现在 K2ZnSi2O6 结构类型的正交空间群 C2221 中结晶。