Europium--gallium (1/2) | 12020-52-9

• 英文名称: Europium--gallium (1/2)
• 英文别名: europium;gallane
• CAS: 12020-52-9
• 化学式: EuGa₂
• 分子量: 291.406
• InChiKey: LLNGNJJXMXGQID-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -2.37
• 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：

  Europium--gallium (1/2) 在 氢气 作用下， 180.0 ℃ 、100.0 kPa 条件下， 反应 2.0h， 生成 、 、
  参考文献：
  名称：

  SrGa 2 D 2形成的原位中子粉末衍射及YbGa 2和EuGa 2的加氢行为

  摘要：

  研究了Zintl相MGa 2（M = Sr，Eu，Yb）的氢化行为。通过在原位差示扫描量热法（DSC）和非原位X射线粉末衍射观察到，在50 bar的氢气压力下加热后，SrGa 2在125°C下开始形成聚阴离子氢化物SrGa 2 H 2。体SrGa的氘化2在原位中子粉末衍射在温度高达300℃，在50≤的压力范围内研究了p（d 2）≤61巴与两分钟的时间分辨率。既没有将氘结合到SrGa 2晶体结构的间隙中也没有观察到反应的任何其他中间体。在各种温度和压力条件下（例如，在T = 299°C，p（D 2）= 60 bar，空间组）下，对于氘代SrGa 2 D 2，未观察到通过Rietveld方法改进的位置或职业参数的显着变化。P 3米1，一个= 4.4098（2）埃，c ^ = 4.7429（3）埃，在1锶一个，0 0 0;嘎在2 d，1/3 2/3 0.474（1）; d 2 d，1/3 2/3

  DOI：

  10.1021/ic401480b
• 作为产物：
  描述：

  氢化镓 、 氢化铕 反应 30.0h， 生成 Europium--gallium (1/2)
  参考文献：
  名称：

  SrGa 2 D 2形成的原位中子粉末衍射及YbGa 2和EuGa 2的加氢行为

  摘要：

  研究了Zintl相MGa 2（M = Sr，Eu，Yb）的氢化行为。通过在原位差示扫描量热法（DSC）和非原位X射线粉末衍射观察到，在50 bar的氢气压力下加热后，SrGa 2在125°C下开始形成聚阴离子氢化物SrGa 2 H 2。体SrGa的氘化2在原位中子粉末衍射在温度高达300℃，在50≤的压力范围内研究了p（d 2）≤61巴与两分钟的时间分辨率。既没有将氘结合到SrGa 2晶体结构的间隙中也没有观察到反应的任何其他中间体。在各种温度和压力条件下（例如，在T = 299°C，p（D 2）= 60 bar，空间组）下，对于氘代SrGa 2 D 2，未观察到通过Rietveld方法改进的位置或职业参数的显着变化。P 3米1，一个= 4.4098（2）埃，c ^ = 4.7429（3）埃，在1锶一个，0 0 0;嘎在2 d，1/3 2/3 0.474（1）; d 2 d，1/3 2/3

  DOI：

  10.1021/ic401480b

文献信息

• EuTM₂Ga₈ (TM = Co, Rh, Ir) — A Contribution to the Chemistry of the CeFe₂Al₈-type Compounds
  作者：O. Sichevych、M. Kohout、W. Schnelle、H. Borrmann、R. Cardoso-Gil、M. Schmidt、U. Burkhardt、Yu. Grin

  DOI：10.1021/ic900573w

  日期：2009.7.6

  electrons of the inner shells. Magnetic susceptibility measurements show Curie−Weiss paramagnetic behavior above 40 K with effective magnetic moments of 7.81, 8.05, and 8.27 μB/f.u. for EuTM2Ga8 (TM = Co, Rh, Ir). Antiferromagnetic ordering of Eu moments is observed in all three compounds below 20 K. Independently on the chemical composition of the coordination sphere, magnetic behavior and, especially,

  通过高频热处理使元素直接反应，制得同构化合物EuTM 2 Ga 8（TM = Co，Rh，Ir）。所有三个相都是同型的，具有CeFe 2 Al 8（空间群Pbam，Pearson符号oP 44，Z = 4）。根据单晶X射线衍射数据确定晶体结构：EuCo 2 Ga 8的a = 12.4322（7）Å，b = 14.3814（9）Å，c = 4.0378（2）Å 。对于EuRh，a = 12.6001（6）Å，b = 14.6757（7）Å，c = 4.1172（2）Å2 Ga 8 ; 和一个= 12.6237（7），b = 14.6978（8）埃，c ^ = 4.1486（2）一种用于EUIR 2嘎8分别。用电子定位工具对EuRh 2 Ga 8中的化学键进行分析后，揭示了通过极性共价键形成的3D [Rh 2 Ga 8 ]聚阴离子。the与聚阴离子有两种相互作用：主要是通过电荷转移作为阳离子，
• Structure–composition sensitivity in “Metallic” Zintl phases: A study of Eu(Ga1−xTtx)2 (Tt=Si, Ge, 0≤x≤1)
  作者：Tae-Soo You、Jing-Tai Zhao、Rainer Pöttgen、Walter Schnelle、Ulrich Burkhardt、Yuri Grin、Gordon J. Miller

  DOI：10.1016/j.jssc.2009.06.032

  日期：2009.9

  Two isoelectronic series, Eu(Ga(1-x)Tt(x))(2) (Tt = Si, Ge, 0 <= x <= 1), have been synthesized and characterized by powder and single-crystal X-ray diffraction, physical property measurements, and electronic structure calculations. In Eu(Ga1-xSix)(2), crystal structures vary from the KHg2-type to the AlB2-type, and, finally, the ThSi2-type structure as x increases. The hexagonal AlB2-type structure is identified for compositions 0.18(2)<= x<0.70(2) with Ga andSi atoms statistically distributed in the polyanionic 6(3) nets. As smaller Si atoms replace Ga atoms while the number of valence electrons increases, the lattice parameters, unit cell volumes, and Ga-Si distances in this phase region decrease significantly. Although aspects of X-ray diffraction results suggest puckering of the 63 nets for the Si-richest example of the AlB2-type Eu(Ga1-xSix)(2), the complete experimental evidence remains inconclusive. On the other hand, in Eu(Ga1-xGex)(2), six different structural types were observed as x varies. In addition to EuGa2 (KHg2-type; space group Imma) and EuGe2 (own structure type, space group P<(3)over bar>m1), the ternary phases studied show four different structures: theAlB(2)-type for Ga-rich compositions; the YPtAs-type structure for EuGaGe; and two new structures, which are intergrowths of the YPtAs-type EuGaGe and EuGe2, for Ge-rich compositions. These two Ge-rich phases include :(1) Eu(Ga0.45(2)Ge0.55(2))(2) containing two YPtAs-type motifs of EuGaGe plus one EuGe2 motif; and (2) Eu(Ga0.40(2)Ge0.60(2))(2) containing one YPtAs-type motif alternating with a split site at x = 2/3; y = 1/3 and z = 0.4798(2) with ca. 50% site occupancy by Ga and Ge along the c-axis. Magnetic susceptibilities of three Eu(Ga1-xGex)(2) compounds display Curie-Weiss behavior above ca. 100K, and show effective magnetic moments indicative of divalent Eu with a 4f(7) electronic configuration, consistent with. X-ray absorption spectra (XAS). Density of states (DOS) and crystal orbital Hamilton population (COHP) analyses, based on first principles electronic structure calculations, rationalize the observed homogeneity ranges of the AlB2-type phases in both systems and the structural variations as a function of Tt content. (C) 2009 Elsevier Inc. All rights reserved.
• CATALYSTS AND METHODS OF MAKING AND USE THEREOF
  申请人：Ohio State Innovation Foundation

  公开号：US20230311097A1

  公开（公告）日：2023-10-05

  Disclosed herein are catalysts and methods of making and use thereof, wherein the catalysts comprises a layered inter-metallic compound.