Cerium--lambda~2~-stannane (5/4) | 11131-80-9

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 各种混合金属/非金属
• 英文名称: Cerium--lambda~2~-stannane (5/4)
• 英文别名: cerium;λ2-stannane
• CAS: 11131-80-9
• 化学式: Ce₅Sn₄
• 分子量: 1175.44
• InChiKey: MCTOYLXTAFNVAS-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  tin 、 氢化铈 (CeH3) 以 melt 为溶剂， 生成 Cerium--lambda~2~-stannane (5/4)
  参考文献：
  名称：

  CexSny化合物的电子结构

  摘要：

  摘要 我们介绍了 8 种 Ce x Sn y 型锡化铈的结构特性、电子结构以及 3d 和 4d X 射线光电发射 (XPS) 光谱。先前的磁性研究表明，CeSn 3 、Ce 2 Sn 5 和Ce 3 Sn 7 中的Ce具有混合价，而Ce 5 Sn 3 和Ce 3 Sn被称为重费米子。为 Ce x Sn y 系列获得的 3d 和 4d XPS 光谱表明 Ce 的混合价。3d XPS 光谱和 LMTO 计算表明 f 轨道与导带的强杂化能 Δ。数量：杂化能 Δ 以及 Ce 的化合价都取决于 Ce 原子的数量，并证明晶体结构的类型和最近的 Ce 邻居的数量决定了这些化合物的基态性质.

  DOI：

  10.1016/j.jallcom.2005.01.062

文献信息

• Magnetism and crystal chemistry of cerium stannides
  作者：F. Weitzer、K. Hiebl、P. Rogl

  DOI：10.1016/0022-5088(91)90019-z

  日期：1991.10

  The system Ce-Sn has been reinvestigated in the temperature range from 400 to 800-degrees-C using X-ray powder diffraction techniques. From a characterization of its crystal structures the existence of nine binary compounds has been confirmed.Magnetic investigation of the binary cerium stannides in the temperature range from 4.2 to 600 K revealed a systematic tendency for ferromagnetic ordering of the cerium-rich compounds up to a ratio Ce:Sn almost-equal-to 1, followed by antiferromagnetism up to a ratio of Ce:Sn almost-equal-to 0.4, towards interconfigurational fluctuation in the compound richest in tin, CeSn3. Candidates for heavy fermion behaviour found in the transition regions, besides CeSn3, are alpha-Ce5Sn3 and Ce11Sn10.
• Magnetic structures of Ce-rich compounds Ce5Sn3 and Ce5Sn4
  作者：F. Givord、P. Lejay、A. Muñoz、J. Schweizer

  DOI：10.1016/0304-8853(92)90124-7

  日期：1992.10

  Magnetic measurements and neutron diffraction studies have been performed on Ce5Sn3 (tetragonal alpha-phase) and Ce5Sn4 (orthorhombic). For both compounds, additional magnetic lines appear on the neutron spectra as the temperature is lowered below 18 K in Ce5Sn3 and below 8 K in Ce5Sn4. The corresponding propagation vectors are k = (0, 0, k(z)) with k(z) = 0.276 for Ce5Sn3, and k = 0 for Ce5Sn4. The group theory analysis based on the crystal symmetries and the Landau theory of phase transitions allowed the determination of the possible couplings between the magnetic moments within each cerium crystallographic site (16 and 4 atoms for Ce5Sn3, 8, 8 and 4 atoms for Ce5Sn4). Ce5Sn3 presents a sine-wave modulated structure with moments lying in the basal plane of the tetragonal structure with a configuration favouring the principal symmetry axes [100] and [010]. Ce5Sn4 is a noncollinear ferromagnet, the ferromagnetic component being along [100].