Abstract
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.
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