Lanthanum--platinum (1/5) | 12031-25-3

• 分子结构分类: 无机化合物 - 均相金属化合物 - 金属间镧系化合物
• 英文名称: Lanthanum--platinum (1/5)
• 英文别名: lanthanum;platinum
• CAS: 12031-25-3
• 化学式: LaPt₅
• 分子量: 1114.31
• InChiKey: WFDXKDLRHSBGER-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 重原子数：
  6
• 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：

  三氢化镧 、 铂 以 melt 为溶剂， 生成 Lanthanum--platinum (1/5)
  参考文献：
  名称：

  Investigation of structural and hydrogen absorption properties in the LaNi5−xPtx–H2 system

  摘要：

  The substitution of nickel by platinum in the binary LaNi5 compound (CaCu5 structure type, a = 5.019(1) Angstrom, c = 3.981 (1) Angstrom, space group P6/mmm) and its effect on the hydrogenation properties was studied. The phase LaNi5-xPtx has a homogeneity domain ranging from x = 0 to 5. For x < 3, platinum substitutes almost exclusively on site 3g and also replaces nickel on site 2c for x > 3. Contrary to what is observed in other systems, the hydrogen absorption plateau pressure was found to increase as a function of the cell volume. Powder neutron diffraction experiments were conducted for two deuterated compounds with x = 0.25 and 0.75. Deuterium partial ordering occurs in the case of x = 0.25 leading to a symmetry decrease to the space group P6mm (LaN4.75Pt0.25D5.23, a = 4.225(1) Angstrom, c = 5.357(1) Angstrom, Z = 1, R-Bragg = 3.3%). For x = 0.75, an orthorhombic superstructure based on the CaCu5-type lattice was found (LaNi4.25Pt0.75D2.61, a(orth) = root3a(hex) = 9.089 (1) Angstrom, b(orth) = b(hex) = 5.272(1) Angstrom, c(orth) = 2c(hex) = 8.145(1) Angstrom, Z = 4, SG Ibam, R-Bragg = 6.1%). (C) 2003 Elsevier Science (USA). All rights reserved.

  DOI：

  10.1016/s0022-4596(03)00116-6

文献信息

• Investigation of structural and hydrogen absorption properties in the LaNi5−xPtx–H2 system
  作者：J.-M. Joubert、J. Charton、A. Percheron-Guégan

  DOI：10.1016/s0022-4596(03)00116-6

  日期：2003.7

  The substitution of nickel by platinum in the binary LaNi5 compound (CaCu5 structure type, a = 5.019(1) Angstrom, c = 3.981 (1) Angstrom, space group P6/mmm) and its effect on the hydrogenation properties was studied. The phase LaNi5-xPtx has a homogeneity domain ranging from x = 0 to 5. For x < 3, platinum substitutes almost exclusively on site 3g and also replaces nickel on site 2c for x > 3. Contrary to what is observed in other systems, the hydrogen absorption plateau pressure was found to increase as a function of the cell volume. Powder neutron diffraction experiments were conducted for two deuterated compounds with x = 0.25 and 0.75. Deuterium partial ordering occurs in the case of x = 0.25 leading to a symmetry decrease to the space group P6mm (LaN4.75Pt0.25D5.23, a = 4.225(1) Angstrom, c = 5.357(1) Angstrom, Z = 1, R-Bragg = 3.3%). For x = 0.75, an orthorhombic superstructure based on the CaCu5-type lattice was found (LaNi4.25Pt0.75D2.61, a(orth) = root3a(hex) = 9.089 (1) Angstrom, b(orth) = b(hex) = 5.272(1) Angstrom, c(orth) = 2c(hex) = 8.145(1) Angstrom, Z = 4, SG Ibam, R-Bragg = 6.1%). (C) 2003 Elsevier Science (USA). All rights reserved.