cesium deuteride | 13940-79-9

• 英文名称: cesium deuteride
• 英文别名: caesium deuteride
• CAS: 13940-79-9
• 化学式: CsH
• 分子量: 134.905
• InChiKey: DZAHJQXPLPNTCE-IEOVAKBOSA-N

反应信息

• 作为反应物：
  描述：

  magnesium dihydride 、 cesium deuteride 以 neat (no solvent, solid phase) 为溶剂， 生成 CsMg(2)H3, low pressure, orthorhombic
  参考文献：
  名称：

  Synthesis and structure of an orthorhombic low-pressure polymorph of caesium magnesium hydride, CsMgH3

  摘要：

  CsMgH3 was synthesized by heating mixtures of the binary hydrides in an autoclave at 600 K and a hydrogen pressure of 150 bars. Synchrotron X-ray and neutron powder diffraction reveals a new structure having orthorhombic symmetry (space group Pmmn, a = 9.9958(1), b = 6.13271(6), c = 8.57364(9) Angstrom for the hydride). In contrast to the trigonal high-pressure polymorph, magnesium centred [MgH6] octahedrons are condensed into triangular rather than linear [3MgH(3)](3-) trimers, and these trimers are connected via four corners to two-dimensional slabs rather than via six corners to a three-dimensional network. The Mg-D distances in the deuteride range from 1.94 to 1.96 Angstrom at the periphery to 2.00-2.08 Angstrom at the centre of the trimers. The Mg displacements within the octahedrons suggest repulsive Mg2+-Mg2+ interactions. (C) 2002 Elsevier Science B.V. All rights reserved.

  DOI：

  10.1016/s0925-8388(02)01314-2