lanthanum stannide | 12031-33-3

• 分子结构分类: 有机化合物
• 英文名称: lanthanum stannide
• 英文别名: Lanthanum--lambda~2~-stannane (1/3)；lanthanum;λ2-stannane
• CAS: 12031-33-3
• 化学式: LaSn₃
• 分子量: 495.035
• InChiKey: PEHDLXNAOHWYOP-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  三氢化镧 、 tin 以 melt 为溶剂， 生成 lanthanum stannide
  参考文献：
  名称：

  二元富锡镧系元素La 2 Sn 5和La 3 Sn 7-结构和键理论研究

  摘要：

  三种富锡的镧系元素LaSn 3，La 2 Sn 5和La 3 Sn 7只能通过变径粉末图得知，它们是通过密封样品管的缓慢冷却或电弧熔化和淬火从元素的熔体合成的。使用Rietveld方法从X射线粉末衍射仪数据中提炼出它们的晶体结构。LaSn 3（立方空间群Pm3′m ，a = 477.77（1）pm，Z   = 1，R F 2 = 0.044）RF2 = 0.044）结晶为常见的Cu 3 Au结构类型，可以描述为订购紧密包装或以[Sn6 ]八面体（closo簇）通过共同的顶点连接。La 2 Sn 5的结构（Ce 2 Sn 5结构类型，正交，空间群Cmmm，a = 463.85（3），b = 3581.3（3），c = 469.83（4）pm，Z   = 4，R F 2 = 0.075）RF2 = 0.075）和La 3 Sn 7（Gd 3 Sn 7结构类型，正交，空间群Cmmm，a = 457

  DOI：

  10.1016/j.jssc.2011.06.035

文献信息

• Studies of LaSn[sub 3] as a Negative Electrode for Lithium-Ion Batteries
  作者：J. T. Vaughey、M. M. Thackeray、D. Shin、C. Wolverton

  DOI：10.1149/1.3125132

  日期：——

  energetics suggest that during the reaction La 3 Sn 5 and lithiated tin are formed and that the electrode operates by delithiation and relithiation of the Sn particles within an inert lanthanum-tin matrix. LaSn 3 electrodes provide a reversible specific capacity of 200-250 mAh/g, whereas In-substituted electrodes that form a solid solution with LaSn 3 , such as LaSn 2.7 In 0.3 , yield a slightly lower capacity

  金属间化合物LaSn 3 已被探索作为锂离子电池的可能负极。实验和密度泛函理论计算的结合提供了证据，表明该结构不能容忍锂插入，并且电化学反应通过置换机制发生。实验表明，大约 6 个 Li 最初与 LaSn 3 反应；计算的能量学表明，在反应过程中形成了 La 3 Sn 5 和锂化锡，并且电极通过惰性镧-锡基体中的 Sn 颗粒的脱锂和再锂化来运行。LaSn 3 电极提供200-250 mAh/g的可逆比容量，而与LaSn 3 形成固溶体的In取代电极，例如LaSn 2.7 In 0.3 ，产生略低的容量。
• Electronic structure of Ce and its intermetallic compounds
  作者：J. C. Fuggle、F. U. Hillebrecht、Z. Zołnierek、R. Lässer、Ch. Freiburg、O. Gunnarsson、K. Schönhammer

  DOI：10.1103/physrevb.27.7330

  日期：——
• The 673 K isothermal section of the La–Ni–Sn ternary system
  作者：Yinghong Zhuang、Haixia Deng、Jingqi Liu、Qingrong Yao

  DOI：10.1016/s0925-8388(03)00475-4

  日期：2004.1

  The phase relationships in the La-Ni-Sn ternary system at 673 K have been investigated by means of X-ray powder diffraction (XRD), differential thermal analysis (DTA), scanning electron microscopy (SEM) and electron probe microanalysis (EPMA). Most of this ternary system was studied at 673 K. At this temperature, a new ternary compound whose atomic ratio is close to La/Ni/Sn = 1:1:3 has been found. The existences of 15 binary compounds La7Ni3, LaNi, La2Ni3, La7Ni16, LaNi3, La2Ni7, LaNi5, Ni3Sn, Ni3Sn2, Ni3Sn4, La5Sn3, La5Sn4, LaSn, La3Sn5, LaSn3 and seven other ternary compounds LaNi5Sn, LaNi4Sn2, LaNi2Sn2, La3Ni2Sn6, La3Ni2Sn7, La3Ni8Sn16, LaNiSn have been confirmed too. There are 31 three-phase regions in the 673 K isothermal section. Due to the lower melting point of Sn (about 504 K), a small part of the ternary system that lies in the Sn-rich part was studied at 483 K. (C) 2003 Elsevier B.V. All rights reserved.