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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >PREPARATION AND CRYSTAL STRUCTURE OF LITHIUM NITRIDE HYDRIDE, LI4NH, LI4ND [German]
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PREPARATION AND CRYSTAL STRUCTURE OF LITHIUM NITRIDE HYDRIDE, LI4NH, LI4ND [German]

机译:氢化氮化锂,Li4NH,Li4ND的制备和晶体结构[德语]

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Single phase Li4NH was prepared by the reaction of Li3N and LIH at 490 degrees C. Its structure has been solved from x-ray and time-of-flight neutron powder diffraction data. Li4NH crystallizes in an ordered variant of the Li2O structure. N and H occupy the sites of two interpenetrating ''extended'' diamond lattices. Li occupies all N2H2 tetrahedral voids and is found to be shifted into a N2H tetrahedral face. As a result H is in compressed tetrahedral coordination by Li, while N is in bisdisphenoidal coordination by Li. Alternatively, the Li4NH structure may be regarded as a [Li4N](+) threedimensional net, its voids being filled up with H-. Li4NH is a reactive solid, which decomposes to imide when in contact with N-2 or H-2 at some 400 degrees C. [References: 19]
机译:单相Li4NH是通过Li3N和LIH在490℃下反应制备的。其结构已通过X射线和飞行时间中子粉末衍射数据得到了解析。 Li 4 NH以Li 2 O结构的有序变体结晶。 N和H占据了两个互穿的``扩展''钻石晶格的位置。 Li占据了所有N2H2四面体空隙,并被发现转变为N2H四面体面。结果,H在Li的作用下处于压缩的四面体配位,而N在Li的作用下处于双双曲面的配位。或者,可以将Li 4 NH结构视为[Li 4 N](+)三维网,其空隙被H-填充。 Li4NH是一种反应性固体,在大约400摄氏度下与N-2或H-2接触时会分解为酰亚胺。[参考文献:19]

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