TlH2AsO4, V | 91724-29-7

• 英文名称: TlH2AsO4, V
• 英文别名: thallium dihydrogen arsenate
• CAS: 91724-29-7；15732-66-8
• 化学式: AsH₂O₄*Tl
• 分子量: 345.318
• InChiKey: SVUJWYWUIQOSNJ-UHFFFAOYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  -3.18
• 重原子数：
  6.0
• 可旋转键数：
  0.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  80.59
• 氢给体数：
  2.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  TlH2AsO4, V 在 氨 作用下， 以 水 为溶剂， 生成 thallium(I) orthoarsenate
  参考文献：
  名称：

  Willm, J. E., Annales de Chimie et de Physique, 1865, vol. 5, p. 58 - 58

  摘要：

  DOI：
• 作为产物：
  描述：

  thallium(I) carbonate 、 砷酸、原砷酸 生成 TlH2AsO4, V
  参考文献：
  名称：

  Dielectric Properties of the Phase Transitionin TlH₂AsO₄

  摘要：

  The dielectric properties of TlH2AsO4 powder pellet are investigated over the temperature range from 80 to 433 K. With respect to the form of the temperature dependence of complex dielectric constant, TlH2AsO4 crystal shows much the same characteristics as with the TlH2PO4 crystal. The results are indicative of a first-order antiferroelectric phase transition at 250.5 K (the lower phase transition point, T(L)) with thermal hysteresis of 1.4 K, and of a second-order ferroelastic phase transition at about 390 K (the upper phase transition point, T(U)).

  DOI：

  10.1143/jpsj.60.3207

文献信息

• Deuteration effect on the structural phase transitions of hydrogen bonded-dielectric T1H2AsO4: a vibrational study
  作者：B. Pasquier、N. Le Calvé、Z. Ouafik

  DOI：10.1016/s0301-0104(97)00206-1

  日期：1997.10

  10–450 K temperature range. Two phase transitions are evidenced near 370 K and near 90 K. The phase sequence is isomorphous with the TlD2PO4 one. The two-dimensional hydrogen bond network is looser and more symmetric than in TlH2AsO4. In contrast to TlH2PO4 and TlH2AsO4, the disordering of the hydrogen bonds occurs in a one-step process. The order-disorder transition, at the high temperature, is driven

  在10–450 K的温度范围内研究了高度氘化（> 95 D％）的TlD 2 AsO 4的红外和拉曼光谱。证明在370 K附近和90 K附近存在两个相变。相序与TlD 2 PO 4同构。二维氢键网络比TlH 2 AsO 4中的氢键网络更松散且更对称。与TlH 2 PO 4和TlH 2 AsO 4相比，氢键的无序发生在一步过程中。在高温下，有序-无序转变是由四面体的重新定向驱动的。TLD的有序相的结构2 ASO 4，假定为通过用TLD类比反铁2 PO 4，是从TLH的准反铁电相的不同2 ASO 4。低温下的有序转变明显是一阶的，这意味着明显的结构变化。当氢键在低温下强化时（T<90 K），两种同位素化合物都在370 K以上时变为同晶。尽管OD模态很少与重原子模态耦合，但与OH模态相比，它们对有序-无序跃迁更敏感。AsO 4模式的带宽是揭示顺电-反电转变的探针。
• Vibrational study of various crystalline phases of thallium dihydrogen arsenate TlH2AsO4. Comparison with thallium dihydrogen phosphate TlH2PO4
  作者：Z. Ouafik、N. Le Calve、B. Pasquier

  DOI：10.1016/0301-0104(95)00029-n

  日期：1995.5

  Infrared and Raman spectra of polycrystalline thallium dihydrogen arsenate (TDA) have been investigated in the 10-4000 cm(-1) wave number range as a function of temperature between 10 and 300 K. Comparison with the original inelastic neutron scattering spectrum of a polycrystalline sample at 30 K allows a detailed assignment. The proton dynamics appear very weakly coupled to the heavy atom dynamics. The spectra are consistent with the doubling of the unit cell below T-c. The order-disorder transition is associated with the reorientation of the AsO4 tetrahedra; the stabilization of these motions is attained at about 150 K below T-c. TIH2AsO4 at low temperature appears ferrielectric. The vibrational features are similar to those of TIH2PO4, which leads to the conclusion that the hydrogen bond frameworks are also similar.
• Narasaiah, T. V.; Choudhary, R. N. P.; Nigam, G. D., Acta Crystallographica, Section C: Crystal Structure Communications, 1987, vol. 43, p. 388 - 390
  作者：Narasaiah, T. V.、Choudhary, R. N. P.、Nigam, G. D.、Mattern, G.

  DOI：——

  日期：——
• Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: Tl: MVol.3, 30, page 433 - 434
  作者：

  DOI：——

  日期：——
• Phase Diagram of TlH₂(P_1-<i>x</i>As_<i>x</i>)O₄Mixed Crystals
  作者：Kwang-Sei Lee、Se-Hun Kim、Cheol Eui Lee、In-Hwan Oh

  DOI：10.1143/jpsj.77.075002

  日期：2008.7.15