Synthesis and crystal structure of a novel nitride hydride Sr2LiNH2
摘要:
The novel nitride hydride Sr2LiNH2 was synthesized by dehydrogenating a LiNH2 + 2SrH(2) mixture at about 330 degrees C. It was found that Sr2LiNH2 crystallizes with a tetragonal structure in space group 14/mmm (no. 139), and with cell parameters: a = b= 3.8104(4)angstrom and c= 13.722(1)angstrom. The crystal structure of Sr2LiNH2 can be described as a stacking of [Sr5Li] octahedra, which is different from those of nitride hydrides of lithium (Li4NH) and strontium (Sr2NH) as well as ternary imides (e.g. Li2Mg(NH)(2) and Li2Ca(NH)(2)). (C) 2010 Elsevier B.V. All rights reserved.