The new scandium(III) carbodiimides Sc₂(CN₂)₃ and Sc₂O₂(CN₂) were prepared by solid‐state metathesis reactions between Li₂(CN₂) and ScCl₃ and, regarding Sc₂O₂(CN₂), Sc₂O₃ was added. The X‐ray powder diffraction pattern refinements lead to a trigonal‐rhombohedral (R3c) crystal system for Sc₂(CN₂)₃ and to an orthorhombic (Immm) crystal system for Sc₂O₂(CN₂). The structure of Sc₂(CN₂)₃ is isotypic to the well‐known rare earth carbodiimides RE₂(CN₂)₃ with the smaller cations RE = Tm, Yb, and Lu, whereas Sc₂O₂(CN₂) is not isotypic to the known RE₂O₂(CN₂) (RE = Y, La, Ce–Gd, except Pm) compounds. Both crystal structures are represented by layered arrangements of scandium, respectively scandium and oxide, alternating with carbodiimide layers.

中文翻译：

---

Scan的碳二亚胺和氧化物碳二亚胺缺失：Sc2（CN2）3和Sc2O2（CN2）

通过Li ₂（CN ₂）和ScCl ₃之间的固相复分解反应以及关于Sc ₂ O ₂（CN ）制备了新的碳二亚胺dium （Sc ₂（CN ₂）₃和Sc ₂ O ₂（CN ₂））。₂），添加了Sc ₂ O ₃。X射线粉末衍射图样的细化导致Sc ₂（CN ₂）₃的三角菱形（R 3 c）晶体系统和正交晶（Immm）Sc ₂ O ₂（CN ₂）的晶体系统。Sc ₂（CN ₂）₃的结构与著名的稀土碳二亚胺RE ₂（CN ₂）₃同型，其阳离子RE = Tm，Yb和Lu较小，而Sc ₂ O ₂（CN ₂）为与已知的RE ₂ O ₂（CN ₂）（RE = Y，La，Ce-Gd，Pm除外）化合物不同型。两种晶体结构均由with的分层排列来表示，respectively的排列与碳二亚胺层交替。