1,2-双(二氟甲氧基)-1,1,2,2-四氟乙烷 | 188690-78-0

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 有机氟化物
• 中文名称: 1,2-双(二氟甲氧基)-1,1,2,2-四氟乙烷
• 英文名称: HG-01
• 英文别名: HFPE；Ethane, 1,2-bis(difluoromethoxy)-1,1,2,2-tetrafluoro-；1,2-bis(difluoromethoxy)-1,1,2,2-tetrafluoroethane
• CAS: 188690-78-0
• 化学式: C₄H₂F₈O₂
• 分子量: 234.046
• InChiKey: YLKPVUPQPLZCQV-UHFFFAOYSA-N

物化性质

• 沸点：
  71.1±35.0 °C(Predicted)
• 密度：
  1.542±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  14
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  1,2-双(二氟甲氧基)-1,1,2,2-四氟乙烷 在 氯 作用下， 24.85 ℃ 、98.66 kPa 条件下， 反应 2.5h， 生成 氟光气
  参考文献：
  名称：

  Tropospheric Degradation Products of Novel Hydrofluoropolyethers

  摘要：

  The Cl atom-initiated photooxidations of the hydrofluoropolyethers (HFPEs) HCF2OCF2OCF2CF2OCF2H, HCF2OCF2CF2OCF2H, and HCF2OCF2OCF2H in air produced C(O)F-2 as the only carbon-containing product, with observed average C(O)F-2 molar formation yields of 4.73, 3.77, and 2.82, respectively. The C(O)F-2 molar formation yields during the early stages of the reactions were observed to be closer to the number of C atoms in each parent HFPE. On the basis of current knowledge concerning the degradation pathways of hydrofluorocarbons and hydrochlorofluorocarbons, it is expected that C(O)F-2 will also be produced with near unit yield per C atom from the above HFPEs in the troposphere, where loss processes would be initiated primarily by reaction with OH radicals. The rate constants for reaction with the Cl atom at 298 +/- 2 K were determined for the HFPEs by a relative rate method that employed CF3CF2H as the reference compound [k(Cl + CF2CF2H) = (2.4 +/- 0.5) x 10(-16) cm(3) molecule(-1) s(-1)], with measured values of (in units of 10(-17) cm(3) molecule(-1) s(-1)) HCF2OCF2OCF2CF2OCF2H, 3.6 +/- 0.8; HCF2OCF2CF2OCF2H, 4.5 +/- 1.0; and HCF2OCF2OCF2H, 5.0 +/- 1.1.

  DOI：

  10.1021/es961010w
• 作为产物：
  描述：

  在 水 作用下， 生成 1,2-双(二氟甲氧基)-1,1,2,2-四氟乙烷 、
  参考文献：
  名称：

  三种全氟聚醚盐的热脱羧研究

  摘要：

  研究了三种链长较短的二羧酸全氟聚醚钾盐的热脱羧反应，并确定了主要反应的产物和动力学。从速率常数和Arrhenius参数数据来看，第二次脱羧在数量上似乎与第一次接近。

  DOI：

  10.1016/s0022-1139(03)00195-7

文献信息

• The radiation chemistry of acyclic hydrofluoro and perhalogenated ether and hydrocarbon compounds
  作者：G Marchionni、P.A Guarda、A Buttafava、A Faucitano

  DOI：10.1016/s0022-1139(03)00008-3

  日期：2003.6

  The radiolytic stability of some hydrofluoroethers and hydrofluorocarbons was investigated and compared with those of perfluoropolyethers (PFPEs) and the CCl2FCClF2 (CFC 113). The experimental results indicate that stability depends mainly on the relative abundance of hydrogen atoms in the molecule; however, a significant role is played also by the chemical structure (i.e. the relative positions of

  研究了某些氢氟醚和氢氟碳化合物的辐射稳定性，并将其与全氟聚醚（PFPE）和CCl 2 FCClF 2（CFC 113）的辐射稳定性进行了比较。实验结果表明，稳定性主要取决于分子中氢原子的相对丰度。然而，化学结构（即分子中氢原子的相对位置）也起着重要作用。其结果是，含有氢原子作为OCF分子2与其他氢氟化合物相比，H链端显示出更高的稳定性。基于对最终产物的分析和EPR检测到的自由基的性质，提出并讨论了辐射分解机理。由于它们的高偶极矩，氢氟化合物和CCl 2 FCClF 2主要通过离子机理降解。
• A study of the thermal decarboxylation of three perfluoropolyether salts
  作者：G Marchionni、S Petricci、G Spataro、G Pezzin

  DOI：10.1016/s0022-1139(03)00195-7

  日期：2003.12

  The thermal decarboxylation of three dicarboxylic perfluoropolyether potassium salts of relatively short chain length has been investigated and the products and kinetics of the main reactions have been defined. From the rate constants and Arrhenius parameters data, the second decarboxylation appears to be quantitatively rather close to the first.

  研究了三种链长较短的二羧酸全氟聚醚钾盐的热脱羧反应，并确定了主要反应的产物和动力学。从速率常数和Arrhenius参数数据来看，第二次脱羧在数量上似乎与第一次接近。
• Tropospheric Degradation Products of Novel Hydrofluoropolyethers
  作者：Ernesto C. Tuazon

  DOI：10.1021/es961010w

  日期：1997.6.1

  The Cl atom-initiated photooxidations of the hydrofluoropolyethers (HFPEs) HCF2OCF2OCF2CF2OCF2H, HCF2OCF2CF2OCF2H, and HCF2OCF2OCF2H in air produced C(O)F-2 as the only carbon-containing product, with observed average C(O)F-2 molar formation yields of 4.73, 3.77, and 2.82, respectively. The C(O)F-2 molar formation yields during the early stages of the reactions were observed to be closer to the number of C atoms in each parent HFPE. On the basis of current knowledge concerning the degradation pathways of hydrofluorocarbons and hydrochlorofluorocarbons, it is expected that C(O)F-2 will also be produced with near unit yield per C atom from the above HFPEs in the troposphere, where loss processes would be initiated primarily by reaction with OH radicals. The rate constants for reaction with the Cl atom at 298 +/- 2 K were determined for the HFPEs by a relative rate method that employed CF3CF2H as the reference compound [k(Cl + CF2CF2H) = (2.4 +/- 0.5) x 10(-16) cm(3) molecule(-1) s(-1)], with measured values of (in units of 10(-17) cm(3) molecule(-1) s(-1)) HCF2OCF2OCF2CF2OCF2H, 3.6 +/- 0.8; HCF2OCF2CF2OCF2H, 4.5 +/- 1.0; and HCF2OCF2OCF2H, 5.0 +/- 1.1.