Synthesis and crystal structure of LiY(CN_2)_2, having a structure related to that of NiAs

Unverfehrt L.; Str?bele M.; Meyer H.-J.

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Synthesis and crystal structure of LiY(CN_2)_2, having a structure related to that of NiAs

机译：具有与NiAs有关的结构的LiY（CN_2）_2的合成和晶体结构

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The new ternary carbodiimide LiY(CN_2)_2 was synthesized by solid state metathesis reaction between YF_3 and Li_2(CN_2) 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.

机译：在550°C的石英管中，通过YF_3和Li_2（CN_2）之间的固相复分解反应合成了新的三元碳二亚胺LiY（CN_2）_2。 X射线单晶结构的确定产生了正交晶系（Pbcn，Z = 4，a = 982.0（3），b = 698.5（2），c = 613.4（2）pm）。可以认为晶体结构与NiAs结构有关。碳二亚胺离子按照棒的六角形最紧密堆积的图案排列成层。锂和钇阳离子以有序的方式占据所有八面体空隙，并沿hcp堆叠方向交替排列。

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《Zeitschrift fur Anorganische und Allgemeine Chemie》 |2013年第1期|共3页
作者
Unverfehrt L.; Str?bele M.; Meyer H.-J.;
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正文语种 eng
中图分类化学;
关键词
Carbodiimides; Crystal structure; Metathesis; Rare earths;

机译：碳二亚胺;晶体结构;复分解;稀土;

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机译：具有与NiAs有关的结构的LiY（CN_2）_2的合成和晶体结构
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Synthesis and crystal structure of LiY(CN_2)_2, having a structure related to that of NiAs

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