硒化砷 | 1303-36-2

• 物质功能分类: 无机化工 - 无机盐 - 硫族化合物
• 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
• 中文名称: 硒化砷
• 英文名称: Arsenic triselenide
• CAS: 1303-36-2
• 化学式: As₂Se₃
• 分子量: 386.723
• InChiKey: WBFMCDAQUDITAS-UHFFFAOYSA-N

物化性质

• 熔点：
  360°C
• 密度：
  4,75 g/cm3
• 溶解度：
  不溶于水；溶于碱性溶液
• 暴露限值：
  ACGIH: TWA 0.01 mg/m3; TWA 0.2 mg/m3NIOSH: IDLH 5 mg/m3; IDLH 1 mg/m3; TWA 0.2 mg/m3; Ceiling 0.002 mg/m3
• 稳定性/保质期：

  不溶于水，但能溶解于硝酸，其相对密度为4.75。

计算性质

• 辛醇/水分配系数(LogP)：
  -1.9
• 重原子数：
  5
• 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

安全信息

• TSCA：
  Yes
• 危险等级：
  6.1
• 危险品标志：
  T,N
• 安全说明：
  S20/21,S28,S45,S60,S61
• 危险类别码：
  R23/25
• 危险品运输编号：
  UN 1557
• RTECS号：
  CG2285000
• 包装等级：
  II
• 危险类别：
  6.1
• 储存条件：
  通风、低温、干燥

制备方法与用途

类别：有毒物品

毒性分级：低毒

急性毒性（口服）- 大鼠 LD50: ＞5000 毫克/公斤

可燃性危险特性：可燃；燃烧时会产生有毒的硒氧化物和砷化物烟雾

储运特性：通风、低温、干燥

灭火剂：干粉、泡沫、沙土、二氧化碳、雾状水

反应信息

• 作为反应物：
  描述：

  硒化砷 以 neat (no solvent, solid phase) 为溶剂， 1050.0 ℃ 、7000.11 MPa 条件下， 生成
  参考文献：
  名称：

  Structural transformations in the As–Se system under high pressures and temperatures

  摘要：

  The high pressure beta- and gamma-phases of As2Se3, which are metastable at normal conditions, were verified and characterized. The beta-phase of As2Se3 is observed after pressure-temperature treatment at 3 < p <5 GPa in the temperature interval 300 < T< 650 degrees C. It is crystallized according to As2Te3 structure type with the parameters a = 13.465 +/- 0.012 angstrom; b = 3.735 +/- 0.003 angstrom; c = 9.471 +/- 0.008 angstrom; C 2/m; Z = 4; D-x = 5.41 g/cm(3). The gamma-phase of As2Se3 was obtained after treatment at p = 7 GPa and T = 950 degrees C in the form of single crystals for the first time. The parameters of its unit cell are: a = 8.113 +/- 0.009 angstrom; c = 21.08 +/- 0.02 angstrom; D-x = 6.37 glcm(3); Z-6; SG R3m (No. 160) or R (3) over barm (No. 166). A new compound AsSe2 is obtained after treatment at p = 7 GPa and T = 1050 degrees C. This compound does not exist at normal conditions and is crystallized in accordance with the structure type of the high-pressure MoSe2 phase (a = 3.2918 angstrom; c = 19.3238 angstrom; R3m; D = 6.387 g/cm(3); Z = 3). The difference in the behaviors of As2S3 and As2Se3 structural analogs under pressure is discussed from the standpoint of crystal chemistry. (C) 2015 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jallcom.2015.05.069
• 作为产物：
  描述：

  selenium 、 砷化氢 以 neat (no solvent, solid phase) 为溶剂， 300.0~650.0 ℃ 、5000.08 MPa 条件下， 生成 硒化砷
  参考文献：
  名称：

  Structural transformations in the As–Se system under high pressures and temperatures

  摘要：

  The high pressure beta- and gamma-phases of As2Se3, which are metastable at normal conditions, were verified and characterized. The beta-phase of As2Se3 is observed after pressure-temperature treatment at 3 < p <5 GPa in the temperature interval 300 < T< 650 degrees C. It is crystallized according to As2Te3 structure type with the parameters a = 13.465 +/- 0.012 angstrom; b = 3.735 +/- 0.003 angstrom; c = 9.471 +/- 0.008 angstrom; C 2/m; Z = 4; D-x = 5.41 g/cm(3). The gamma-phase of As2Se3 was obtained after treatment at p = 7 GPa and T = 950 degrees C in the form of single crystals for the first time. The parameters of its unit cell are: a = 8.113 +/- 0.009 angstrom; c = 21.08 +/- 0.02 angstrom; D-x = 6.37 glcm(3); Z-6; SG R3m (No. 160) or R (3) over barm (No. 166). A new compound AsSe2 is obtained after treatment at p = 7 GPa and T = 1050 degrees C. This compound does not exist at normal conditions and is crystallized in accordance with the structure type of the high-pressure MoSe2 phase (a = 3.2918 angstrom; c = 19.3238 angstrom; R3m; D = 6.387 g/cm(3); Z = 3). The difference in the behaviors of As2S3 and As2Se3 structural analogs under pressure is discussed from the standpoint of crystal chemistry. (C) 2015 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jallcom.2015.05.069

文献信息

• Synthesis and Structure of the Novel Pentaselenidohexaarsenate(I,II) Cluster Anion [As6Se5]2−
  作者：Anna Kromm、William S. Sheldrick

  DOI：10.1002/zaac.200700527

  日期：2008.5

  Methanolothermal reaction of [MnCl3(9-ane-N3)] with As2Se3 at 150 °C in the presence of Cs2CO3 affords violet-coloured [Mn(9-ane-N3)2]As6Se5 (1). Its novel tricyclic selenidoarsenate(I,II) anion [As6Se5]2− contains two five-membered [As3As(Se)Se] rings that are symmetry-related by a crystallographic C2 axis passing through the common AsI-AsI bond between their respective first two ring members. The

  [MnCl3(9-ane-N3)] 与 As2Se3 在 150 °C 下在 Cs2CO3 存在下的甲醇热反应得到紫色 [Mn(9-ane-N3)2]As6Se5 (1)。其新颖的三环硒代砷酸盐 (I,II) 阴离子 [As6Se5]2- 包含两个五元 [As3As(Se)Se] 环，它们通过晶体学 C2 轴通过它们各自的第一个键之间的共同 AsI-AsI 键对称相关。两个环成员。各个环中相邻的 AsI 原子由第三个 [As4Se] 环的 Se 原子桥接。
• The noncentrosymmetric chain compounds, A3M2AsSe11 (A = K, Rb, Cs; M = Nb, Ta)
  作者：Junghwan Do、Mercouri G. Kanatzidis

  DOI：10.1016/j.jallcom.2004.03.088

  日期：2004.11

  The noncentrosymmetric niobium and tantalum selenoarsenates, A(3)Nb(2)AsSe(11), (A = K, Rb, Cs) and K3Ta2AsSe11, were synthesized in a polyselenoarsenate flux. All compounds crystallize in the polar monoclinic space group Cc. The structures are comprised of the same type of infinite chain anions, [M2Se2(Se-2)(3)(AsSe3)](3-) (M = Nb, Ta) separated by alkali metal cations. The As3+ centers with nonbonded electron pairs play an important role in stabilizing the noncentrosymmetric structures. UV-Vis spectroscopy, Raman spectroscopy and differential thermal analysis data are reported. The energy gaps of these compounds vary between 1.35 and 1.53 eV. (C) 2004 Elsevier B.V All rights reserved.
• Ohtsuki, T.; Ohno, K.; Shiga, K., Physical Review B: Condensed Matter and Materials Physics, p. 1 - 4
  作者：Ohtsuki, T.、Ohno, K.、Shiga, K.、Kawazoe, Y.、Yuki, H.

  DOI：——

  日期：——