Germane--neptunium (3/1) | 50644-90-1

• 分子结构分类: 无机化合物
• 英文名称: Germane--neptunium (3/1)
• 英文别名: germane;neptunium
• CAS: 50644-90-1
• 化学式: Ge₃Np
• 分子量: 454.818
• InChiKey: ASYXYTXTLSKRLM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -4.35
• 重原子数：
  4
• 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

• 作为产物：
  描述：

  锗烷 、 镎 以 melt 为溶剂， 生成 Germane--neptunium (3/1)
  参考文献：
  名称：

  N锗二元体系的结构化学

  摘要：

  已经通过X射线衍射研究了完整的二元-锗化物体系的结构化学。除了众所周知的NpGe 3（AuCu 3型）外，还发现了至少五个新的二元相。NpGe 2- x（缺陷ThSi 2型），NpGe 2- x（缺陷AlB 2型），NpGe（USi型），Np 5 Ge 4（Ti 5 Ga 4型）和Np 5 Ge 3（ W 5硅3类型）已从单晶和粉末X射线衍射数据中提炼出来。通过Rietveld型轮廓细化的X射线粉末分析表明，这三个第一相的均一性范围较小，这通常在稀土或铀同型化合物中观察到，而Np 5 Ge 4和Np 5 Ge 3似乎是线型化合物因为晶胞参数与起始组成无关。讨论了这些新相的形成和均一性范围，并将结构演化与类似的铀二元体系进行了比较。

  DOI：

  10.1006/jssc.2000.9000

文献信息

• X-ray diffraction studies of AuCu3-type neptunium compounds under pressure
  作者：Y Méresse、S Heathman、T Le Bihan、J Rebizant、M.S.S Brooks、R Ahuja

  DOI：10.1016/s0925-8388(99)00509-5

  日期：2000.1

  NpX3 (AuCu3-type structure) compounds with X=Al, Ga, Ge, In and Sn were studied up to 50 GPa using the energy dispersive X-ray diffraction (EDXRD) technique. No structural phase transitions were observed for any of the compounds studied up to the highest pressures attained. The compressibility was measured for each compound and compared with theory. The results for NpX3 are compared with those previously obtained for UX3. (C) 2000 Published by Elsevier Science S.A. All rights reserved.
• Itinerant 5 <i>f</i> Electrons and the Fermi Surface Properties in an Enhanced Pauli Paramagnet NpGe₃
  作者：Dai Aoki、Hiroshi Yamagami、Yoshiya Homma、Yoshinobu Shiokawa、Etsuji Yamamoto、Akio Nakamura、Yoshinori Haga、Rikio Settai、Yoshichika Ōnuki

  DOI：10.1143/jpsj.74.2149

  日期：2005.8

  We succeeded in growing a high-quality single crystal of an enhanced Pauli paramagnet, NpGe3, by the Bi-flux method, and observed the de Haas-van Alphen (dHvA) effect. The topology of a Fermi surface is well explained by the relativistic linear augmented-plane-wave (LAPW) band calculations based on the 5f itinerant band model. The Fermi surface consists of a nearly spherical electron-Fermi surface with necks along the (100) direction, forming a hollow ball, centered at the R point, which is derived from the single band. The cyclotron effective mass is in the range from 2.6 to 16m(o), which is enhanced approximately 3.5 times from the corresponding band:mass.