ammonium-d4 dideuterium arsenate | 21582-30-9

• 分子结构分类: 无机化合物
• 英文名称: ammonium-d4 dideuterium arsenate
• 英文别名: DADA
• CAS: 21582-30-9
• 化学式: AsH₂O₄*H₄N
• 分子量: 164.926
• InChiKey: VTWJXWNBCACAAK-YIKVAAQNSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -2.43
• 重原子数：
  6.0
• 可旋转键数：
  2.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  117.09
• 氢给体数：
  3.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  rubidium dideuterium arsenate 、 ammonium-d4 dideuterium arsenate 以 水 为溶剂， 生成
  参考文献：
  名称：

  Temperature and concentration dependences of Raman vibrational modes inRb1−x(ND4)xD2AsO4mixed crystals

  摘要：

  The Raman vibrations (10-10(3) cm(-1)) of A(1), B-2, and E symmetries along the [110] phonon direction have been measured as a function of temperature (80-293 K) in the mixed ferroelectric (FE) antiferroelectric system Rb-1-x(ND4)(x)D2AsO4 (DRADA-x) for ammonium concentrations x=0, 0.10, and 0.28. With decreasing temperature, the B-2 Raman shifts of RbD2AsO4 show both softening and hardening anomalies for four selected modes. In DRADA-0.10, the bending mode v(2)(B-2) (near 280 cm(-1)) of the AsO4 group exhibits a gradual softening down to T similar to 125 K and then has a rapid drop. This phenomenon is attributed to a quick development of long-range FE ordering. In DRADA-0.28; the in-plane bending mode delta(O-D) (B-2) shows a softening near 220 K, whereas the bending mode v(2)(B-2) Of the AsO4 group exhibits a hardening. We associate these anomalies with the onset of glass formation. A doublet with splitting of about 10 cm(-1) was observed in the v(1) modes and was attributed to a slight deformation of the v(1) vibration due to AsO4 groups having different nearby ions (ND4 and Rb).

  DOI：

  10.1103/physrevb.55.2920
• 作为产物：
  描述：

  砷酸二氢铵 以 重水 为溶剂， 生成 ammonium-d4 dideuterium arsenate
  参考文献：
  名称：

  Effect of Hydrostatic Pressure on the Antiferroelectric Phase Transitions in Ammonium Dihydrogen Arsenate NH₄H₂AsO₄and Deuterated Analogue

  摘要：

  DOI：

  10.1143/jpsj.53.4405

文献信息

• Protonic conduction and the Néel temperature in deuterated ammonium dihydrogen arsenate
  作者：Charles T. Perrino、Robert G. Johnson

  DOI：10.1016/0022-4596(80)90107-3

  日期：1980.3

  The conductivity of antiferroelectric ND4D2AsO4 single crystals has been measured as a function of temperature, especially near the Néel temperature. At the Néel temperature the conductivity shows a vertical decrease to a lower value indicating that the mechanism of conduction is connected to the shift of the protons during the phase transition. This conductivity mechanism in potassium and ammonium

  已经测量了反铁电ND 4 D 2 AsO 4单晶的电导率与温度的关系，特别是在Néel温度附近。在Néel温度下，电导率显示出垂直减小到一个较低的值，表明传导机制与相变过程中质子的移动有关。先前已经提出了在磷酸二氢钾和铵和砷酸二钾中的这种电导机理，包括沿氢键的质子运动以及跨磷酸盐或砷酸四面体的质子跳跃。ND 4 D 2 AsO 4中质子迁移的跳跃活化能被发现为10.5kcal / mole，并且室温电导率为9.91×10 -10 ohm -1 cm -1。
• Gough, S. R.; Ripmeester, J. A.; Dalal, N. S., Journal of Physical Chemistry, 1979, vol. 83, p. 664 - 669
  作者：Gough, S. R.、Ripmeester, J. A.、Dalal, N. S.、Reddoch, A. H.

  DOI：——

  日期：——
• Intermediate phase between deuteron-glass and antiferroelectric order in the D-RADA system
  作者：Zbigniew Trybuła、Jan Stankowski、Szymon Łoś

  DOI：10.1016/0921-4526(93)90090-s

  日期：1993.9

  This paper reports the results of a dielectric investigation of deuterated glass D-RADA, x = 0.39. The shape of the temperature dependence of the imaginary part of the permittivity epsilon'' was analyzed, Analysis of the shape of the temperature dependence of epsilon''(T, nu) proved the existence of two phases of different mechanisms of relaxation, forming among the antiferroelectric domains. One of these mechanisms can be described by the Vogel-Fulcher equation with the parameters T0 = 25.7 K, E(c) = 105.6 K (9.1 meV) and nu0 = 1.16 x 10(8) Hz, and is typical for clusters with short-range order characteristic of proton (deuteron) glass. The other relaxational mechanism is the thermally activated Arrhenius dipolar reorientation with activation energy E(c) = 1105 K (95.2 meV) and frequency nu0 = 1.44 x 10(12) Hz. It is related to free dipoles which have been released from the melting long-range ordering but have not managed to form a cluster yet.