2,2-difluoropropylene

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 有机氟化物
• 英文名称: 2,2-difluoropropylene
• 化学式: C₃H₅F₂
• 分子量: 79.0695
• InChiKey: BRIQSYPMWHUJGW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  5
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  2,2-二氟丙烷 在 氧气 、 六氟化硫 作用下， 生成 2,2-difluoropropylene
  参考文献：
  名称：

  Atmospheric Chemistry of HFC-272ca: Spectrokinetic Investigation of the CH3CF2CH2O2 Radical, Its Reactions with NO and NO2, and the Fate of the CH3CF2CH2O Radical

  摘要：

  A pulse radiolysis technique has been used to investigate the UV absorption spectrum of the CH3CF2CH2O2 radical from HFC-272ca, CH3CF2CH3. The absorption cross sections were quantified in the wavelength range 220-320 nm; at 250 nm the absorption cross section for CH3CF3CH2O2 was sigma = (451 +/- 59) x 10(-20) cm(2) molecule(-1). By following the increase in NO2 at 400 nm, the rate constant for the reaction of CH3CF2CH2O2 with NO was determined to be (8.5 +/- 1.9) x 10(-12) cm(3) molecule(-1) s(-1). The reaction of CH3CF2CH2O2 with NO2 was found to have a reaction rate constant of (6.8 +/- 0.5) x 10(-12) cm(3) molecule(-1) s(-1). The kinetics of the reaction of CH3CF2CH3 with F atoms and CH3CF2CH2 with O-2 were studied. The rate constants were (2.8 +/- 0.9) x 10(-11) and (1.10 +/- 0.03) x 10(-12) cm(3) molecule(-1) s(-1), respectively. The observed rate constant for the self-reaction of CH3CF2CH2O2 radicals was (8.6 +/- 0.4) x 10(-12) cm(3) molecule(-1) s(-1). The reaction of CH3CF2CH2O2 radicals with NO gives CH3CF2CH2O radicals; the dominant atmospheric fate of CH3CF2CH2O radicals is reaction with O-2 to give CH3CF2CHO. As part of the present work, relative rate techniques were used to measure rate constants at 296 +/- 2 K for the reactions of Cl and F atoms with CH3CF2CH3, with the values being (1.7 +/- 0.2) x 10(-14) and (3.3 +/- 0.8) x 10(-11) cm(3) molecule(-1) s(-1), respectively.

  DOI：

  10.1021/j100007a033

文献信息

• Atmospheric Chemistry of HFC-272ca: Spectrokinetic Investigation of the CH3CF2CH2O2 Radical, Its Reactions with NO and NO2, and the Fate of the CH3CF2CH2O Radical
  作者：Trine E. Mogelberg、Ole J. Nielsen、Jens Sehested、Timothy J. Wallington、Michael D. Hurley

  DOI：10.1021/j100007a033

  日期：1995.2

  A pulse radiolysis technique has been used to investigate the UV absorption spectrum of the CH3CF2CH2O2 radical from HFC-272ca, CH3CF2CH3. The absorption cross sections were quantified in the wavelength range 220-320 nm; at 250 nm the absorption cross section for CH3CF3CH2O2 was sigma = (451 +/- 59) x 10(-20) cm(2) molecule(-1). By following the increase in NO2 at 400 nm, the rate constant for the reaction of CH3CF2CH2O2 with NO was determined to be (8.5 +/- 1.9) x 10(-12) cm(3) molecule(-1) s(-1). The reaction of CH3CF2CH2O2 with NO2 was found to have a reaction rate constant of (6.8 +/- 0.5) x 10(-12) cm(3) molecule(-1) s(-1). The kinetics of the reaction of CH3CF2CH3 with F atoms and CH3CF2CH2 with O-2 were studied. The rate constants were (2.8 +/- 0.9) x 10(-11) and (1.10 +/- 0.03) x 10(-12) cm(3) molecule(-1) s(-1), respectively. The observed rate constant for the self-reaction of CH3CF2CH2O2 radicals was (8.6 +/- 0.4) x 10(-12) cm(3) molecule(-1) s(-1). The reaction of CH3CF2CH2O2 radicals with NO gives CH3CF2CH2O radicals; the dominant atmospheric fate of CH3CF2CH2O radicals is reaction with O-2 to give CH3CF2CHO. As part of the present work, relative rate techniques were used to measure rate constants at 296 +/- 2 K for the reactions of Cl and F atoms with CH3CF2CH3, with the values being (1.7 +/- 0.2) x 10(-14) and (3.3 +/- 0.8) x 10(-11) cm(3) molecule(-1) s(-1), respectively.