Synthesis and Crystal Structure of LiY(CN2)2, Having a Structure Related to That of NiAs |
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| Authors: | Leonid Unverfehrt Markus Ströbele H‐Jürgen Meyer |
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| Institution: | Abteilung für Festk?rperchemie und Theoretische Anorganische Chemie, Institut für Anorganische Chemie, Auf der Morgenstelle 18, Eberhard Karls Universit?t Tübingen, 72076 Tübingen, Germany |
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| Abstract: | The new ternary carbodiimide LiY(CN2)2 was synthesized by solid state metathesis reaction between YF3 and Li2(CN2) in a silica tube at 550 °C. The X‐ray single‐crystal structure determination yielded an orthorhombic crystal system (Pbcn, Z = 4, a = 982.0(3), b = 698.5(2), c = 613.4(2) pm). The crystal structure can be considered related to the NiAs structure. The carbodiimide ions are arranged in layers following the motif of a hexagonal closest packing of sticks. Lithium and yttrium cations occupy all octahedral voids in an ordered fashion, alternating on top of each other along the hcp stacking direction. |
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| Keywords: | Rare earths Carbodiimides Metathesis Crystal structure |
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