CAS: 1303-36-2; Arsenic (Iii) Selenide

📜Selenium,砷化氢 以 Neat (No Solvent,Solid Phase) 用作溶剂,300.0~650.0 °C,5000.08 Mpa 条件下,反应生成硒化砷
参考文献:Structural Transformations In The As-se System Under High Pressures And Temperatures
标题: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

专利信息

专利号:CN-217953099-U
优先权日:2022-06-30
标 题:A three-stage synthesis furnace for the production of arsenic trioxide