uranium digermanide | 12339-10-5

• 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: uranium digermanide
• 英文别名: Germane--uranium (2/1)；germane;uranium
• CAS: 12339-10-5
• 化学式: Ge₂U
• 分子量: 383.209
• InChiKey: WQVFFTUCIDALPP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -2.9
• 重原子数：
  3
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  uranium digermanide 、 铑 以 neat (no solvent) 为溶剂， 生成
  参考文献：
  名称：

  一些铀三元锗化物的结构、磁和电特性：UM2Ge2（M = Rh、Ir）和 U4M7Ge6（M = Ru、Os）

  摘要：

  摘要 研究了U 4 M 7 Ge 6 (M = Ru, Os)和UM 2 Ge 2 (M = Rh, Ir)的晶体结构和物理性质。前者以U 4 Re 7 Si 6 的立方结构结晶；U 4 Ru 7 Ge 6 在 TC ≈ 10–13 K 时铁磁性有序，而 U 4 Os 7 Ge 6 在低至 4.2 K 时仍保持顺磁性。后者的结构源自四方 ThCr 2 Si 2 或 CaBe 2 Ge 2 类型，显示出有限的均匀性范围；URh 2 Ge 2 在低温下表现出密集的近藤行为；UIr 2 Ge 2 表现出多晶现象，其物理性质受其晶体结构的影响很大。

  DOI：

  10.1016/0304-8853(87)90236-8
• 作为产物：
  描述：

  锗烷 、 铀 以 neat (no solvent) 为溶剂， 生成 uranium digermanide
  参考文献：
  名称：

  一些铀三元锗化物的结构、磁和电特性：UM2Ge2（M = Rh、Ir）和 U4M7Ge6（M = Ru、Os）

  摘要：

  摘要 研究了U 4 M 7 Ge 6 (M = Ru, Os)和UM 2 Ge 2 (M = Rh, Ir)的晶体结构和物理性质。前者以U 4 Re 7 Si 6 的立方结构结晶；U 4 Ru 7 Ge 6 在 TC ≈ 10–13 K 时铁磁性有序，而 U 4 Os 7 Ge 6 在低至 4.2 K 时仍保持顺磁性。后者的结构源自四方 ThCr 2 Si 2 或 CaBe 2 Ge 2 类型，显示出有限的均匀性范围；URh 2 Ge 2 在低温下表现出密集的近藤行为；UIr 2 Ge 2 表现出多晶现象，其物理性质受其晶体结构的影响很大。

  DOI：

  10.1016/0304-8853(87)90236-8

文献信息

• Crystal and magnetic structure of the uranium digermanide UGe2
  作者：P. Boulet、A. Daoudi、M. Potel、H. Noël、G.M. Gross、G. André、F. Bourée

  DOI：10.1016/s0925-8388(96)02600-x

  日期：1997.1

  Abstract The crystal structure of the uranium digermanide UGe 2 was determined and refined from single crystal X-ray diffraction data to R = 0.040, Rw = 0.052. UGe 2 crystallizes with the orthorhombic ZrGa 2 type ( Cmcm ) instead of the ZrSi 2 type ( Cmcm ) as was previously assumed on the basis of rather old and unreliable results. Our magnetic study of a polycrystalline are melted UGe 2 sample confirms

  摘要 根据单晶X射线衍射数据确定并精炼了二锗化铀UGe 2 的晶体结构，R = 0.040，Rw = 0.052。UGe 2 以斜方晶 ZrGa 2 型 (Cmcm) 结晶，而不是先前基于相当古老且不可靠的结果所假设的 ZrSi 2 型 (Cmcm)。我们对多晶熔化的 UGe 2 样品的磁性研究证实了约低于约 2 的铁磁相互作用的开始。52 K. 中子粉末衍射研究表明该结构为共线铁磁结构，铀磁矩平行于斜方晶胞的 a 轴：在 T = 1.4 K 时，铀磁矩值为 M 1 = 1.42(4) μ B.
• Magnetic and electrical behavior of new uranium ternary germanides URhGe2 and UIrGe2
  作者：E. Hickey、B. Chevalier、J. Etourneau

  DOI：10.1016/0025-5408(89)90068-8

  日期：1989.9

  Abstract New ternary germanides, URhGe 2 and UIrGe 2 crystallizing in the orthorhombic YIrGe 2 -type structure have been prepared.URhGe 2 orders ferromagnetically below T C = 31 K, whereas spin fluctuations occur in UIrGe 2 . Such a behavior is the consequence of the 5f (Uranium)-nd (M transition element) hybridization which is stronger with Ir(5d) than with Rh (4d).

  摘要 已经制备了在正交晶系YIrGe 2 型结构中结晶的新型三元锗化物URhGe 2 和UIrGe 2 。URhGe 2 在TC = 31 K以下具有铁磁性，而在UIrGe 2 中发生自旋涨落。这种行为是 5f（铀）-nd（M 过渡元素）杂化的结果，Ir(5d) 比 Rh (4d) 更强。
• Random anisotropy in UGe2 amorphous alloy
  作者：Y. Homma、Y. Takakuwa、Y. Shiokawa、D.X. Li、K. Sumiyama、K. Suzuki

  DOI：10.1016/s0925-8388(98)00415-0

  日期：1998.7

  Magnetic properties have been observed for the UGe2 amorphous alloy produced by r.f. sputtering. No magnetization saturation at 50 kOe and large coercive force indicate that this alloy has marked random anisotropy. The isothermal remanence decays slowly in a manner of Arrhenius type thermal activation process. The thermomagnetic curves exhibit strong dependence on the history of cooling processes. The zero-field-cooled susceptibility chi(0) = M/H (H = 10 Oe), indicates that the UGe2 amorphous alloy undergoes a higher-order phase transition to a spin-glass like phase with no spontaneous magnetization but an infinite susceptibility, as proposed by Aharony and Pytte. (C) 1998 Elsevier Science S.A.
• Motoyama, Gaku; Nakamura, Setsushi; Kadoya, Hiroyuki, Physical Review B: Condensed Matter and Materials Physics, p. 1 - 4
  作者：Motoyama, Gaku、Nakamura, Setsushi、Kadoya, Hiroyuki、Nishioka, Takashi、Sato, Noriaki K.

  DOI：——

  日期：——
• Structural study of UCuGe1.75 by X-ray and electron diffraction
  作者：B Darriet、B Chevalier、J Darriet、S Pechev

  DOI：10.1016/s0925-8388(00)01425-0

  日期：2001.4

  The new ternary germanide UCuGr(1.75) have been isolated. After annealing treatment (under vacuum at 1073 K for 1 month), microprobe chemical analysis and X-ray powder diffraction revealed the presence of several phases: major phase corresponds to UCuGe1.75(5) and traces of UGe2 and UCu2Ge2 were present as impurities phases. The refinement of the crystal structure was performed using a single crystal. It crystallises in orthorhombic system with a=0.4052(3) nm, b=1.697(1) nm and c=0.4058(1) nm. The structure of UCuGe1.75 corresponds to the TbFeSi2 structural type. An investigation by transmission electron microscopy (TEM) revealed a substructure 2aX2bX2c which has been explained by a three-dimensional order of vacancies corresponding to the germanium deficit. Moreover the electrical resistivity and magnetization measurements performed on UCuGe1.75 revealed the occurrence of antiferromagnetic ordering below T-N=133(1) K. (C) 2001 Elsevier Science B.V. All rights reserved.