lambda~2~-Stannane--cobalt (3/1) | 134807-88-8

• 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: lambda~2~-Stannane--cobalt (3/1)
• 英文别名: cobalt;λ2-stannane
• CAS: 134807-88-8
• 化学式: CoSn₃
• 分子量: 415.123
• InChiKey: WOJHTOFCSPAHNJ-UHFFFAOYSA-N

反应信息

• 作为反应物：
  描述：

  magnesium stannide 、 lambda~2~-Stannane--cobalt (3/1) 以 neat (no solvent, solid phase) 为溶剂， 生成
  参考文献：
  名称：

  Mg2Co3Sn10+x 中配位多面体的新组合——Mg/Co/Sn 体系的第一阶段

  摘要：

  Mg2Co3Sn10+x 是三元体系 Mg/Co/Sn 中的第一种化合物。用于结构分析的单晶是通过锡焊剂法从元素中生长出来的。通过 X 射线单晶分析 (R1 = 0.037) 确定结构 (P63/mmc, a = 9.490(1) A 和 c = 33.555(7) A)。观察到 0 ≤ x ≤ 0.15 的小相宽，这是由于十分之一的锡位置的部分占据。有两个晶体学上不同的钴位点，每个位点都有一个独特的锡配位球。Co1 位点具有与锡原子的方形反棱柱配位，与在富含锡的二元锡化物中观察到的相当。Co2 位点的特征在于与锡的三角棱柱配位，类似于以前已知的三元锡化物。不同的多面体以错综复杂的方式排列在交替的层中，导致锡锡距离小于 3A。镁仅存在于那些具有与锡原子配位的三角棱柱形钴的层中。因此，该结构显示出前所未有的不同配位球排列，并进一步提供了金属框架内同原子锡键合的证据。磁化率测量显示温度独立泡利顺磁性低至

  DOI：

  10.1002/zaac.200400296
• 作为产物：
  描述：

  cobalt(II) chloride hexahydrate 、 tin(ll) chloride 在 NaBH₄ 作用下， 以 further solvent(s) 为溶剂， 生成 lambda~2~-Stannane--cobalt (3/1)
  参考文献：
  名称：

  Shape-Controlled Conversion of β-Sn Nanocrystals into Intermetallic M-Sn (M = Fe, Co, Ni, Pd) Nanocrystals

  摘要：

  The ability to control the shape of metal nanocrystals is critical to applications such as catalysis, magnetism, and plasmonics. Despite significant advances in controlling the shapes of single-metal nanocrystals, rigorous shape control of multimetal nanocrystals remains challenging, and has been limited largely to alloy systems of similar metals. Here we describe a robust strategy that produces shape-controlled intermetallic nanocrystals involving elements of notably different reduction potentials, reduction kinetics, and reactivity. The approach utilizes shape- and size-controlled beta-Sn nanocrystals as reactive templates that can be converted into binary M-Sn (M = Fe, Co, Ni, Pd) intermetallic compounds by reaction with appropriate metal salt solutions under reducing conditions. The result, demonstrated in detail for the FeSn2 system, is a variety of nanostructures with morphologies that include spheres, cubes, hollow squares, U-shaped structures, nanorods, and nanorod dimers. Our experiments demonstrate a size- and shape-dependent reactivity toward the formation of hollow FeSn2 nanostructures and provide empirical guidelines for the formation of other intermetallic nanocrystals. In addition to those of FeSn2, nanocrystals of intermetallic PdSn, CoSn3, and NiSn3 can be formed using this same chemical conversion strategy.

  DOI：

  10.1021/ja069032y

文献信息

• Strong effects of minor Ga addition on liquid-state Sn–Ga/Co interfacial reactions
  作者：Chao-hong Wang、Kuan-ting Li

  DOI：10.1016/j.jallcom.2015.07.228

  日期：2015.11

  Liquid-state interfacial reactions between Co and Sn-Ga solders at 250 degrees C were examined with addition of various Ga contents (0.1wt.%-1wt.%). Minor Ga addition in Sn-based solders strongly affected the-growth of intermetallic compounds (IMCs) at the interface and even the IMC species. With addition of less than 0.3wt.%Ga, one continuous CoSn3 layer was formed. Most importantly, the CoSn3 growth was greatly decreased by 95% with only 0.2wt.%Ga addition. Multi-stage interfacial reactions with different solders demonstrated that the strong inhibition of IMC growth was likely due to minor Ga doping in the CoSn3 phase and a possible mechanism was proposed. When the Ga content was increased to 0.4wt.%-0.6wt.%, only a thin uniform CoGa layer, being similar to 1 mu m thick, was stably present at the interface. Even after aging for 12 h, it had no significant growth. At higher Ga contents (0.7wt.%-1wt.%), the dominant phase changed to the CoGa3 phase in the initial reaction. Subsequently, the CoGa3 gradually transformed to the CoGa. In addition, the partial isothermal section (less than 40at.%Co) of the Sn-Ga-Co phase diagram at 250 degrees C was experimentally determined. Two three-phase regions, L-CoSn3-CoGa and L-CoGa-CoGa3 tie-triangles, were identified. The phase equilibria relationship can reasonably interpret the transitions of interfacial products with varying Ga contents. (C) 2015 Elsevier B.V. All rights reserved.
• Sn–Co alloy anode using porous Cu as current collector for lithium ion battery
  作者：Xiao-Yong Fan、Fu-Sheng Ke、Guo-Zhen Wei、Ling Huang、Shi-Gang Sun

  DOI：10.1016/j.jallcom.2008.09.030

  日期：2009.5

  Porous Cu was prepared by electrodepositing Cu on a Cu foil using hydrogen bubbles as dynamic template, followed annealing at appropriate conditions to strengthen the adhesion between the porous Cu layer and the Cu foil substrate. Sn-Co alloy was then electrodeposited on the porous Cu substrate which served as current collector to be used as anode of lithium ion battery. X-ray diffraction (XRD) and EDS analysis indicated that the Sn-Co alloy was an intermetallic compound of CoSn3, whose surface structure is stable as illustrated by scanning electronic microscopy (SEM) images obtained before and after electrochemical cycles. It has also revealed that the Sn-Co alloy anode on the porous Cu substrate possessed a relative large capacity and a superior cycleability than that of the Sn-Co alloy anode on the smooth Cu sheet. The first discharge and charge capacities were measured respectively at 726 and 563 mAh g(-1), and its capacity in the 50th cycle was retained at ca. 71% of that in the second cycle, which has been improved more than 3 times higher of that of the Sn-Co alloy anode on the smooth Cu sheet under the same conditions. (C) 2008 Elsevier BY. All rights reserved.