bromocarbene | 17141-28-5

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 有机溴化物
• 英文名称: bromocarbene
• 英文别名: bromomethanediyl；Brommethylenbiradikal；Carbenbromid
• CAS: 17141-28-5
• 化学式: CHBr
• 分子量: 92.9229
• InChiKey: PRCFIJGWTCBHPP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  2
• 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

反应信息

• 作为反应物：
  描述：

  2-苯基-1,3-二四氢呋喃 、 bromocarbene 反应 3.0h， 以69%的产率得到2-溴甲基-2-苯基-1,3-二氧戊环
  参考文献：
  名称：

  Safiev, O. G.; Nazarov, D. V.; Zorin, V. V., Russian Journal of Physical Chemistry, 1988, vol. 62, # 11, p. 1642 - 1643

  摘要：

  DOI：
• 作为产物：
  描述：

  溴乙酰溴 生成 bromocarbene
  参考文献：
  名称：

  Production of Halomethylenes in Free-Jet Expansions from a Hot Nozzle: Identification and Characterization of HCBr and DCBr by Laser-Induced Fluorescence Excitation Spectroscopy

  摘要：

  The efficient production of chloromethylene and bromomethylene by hot-nozzle pyrolysis and subsequent supersonic free-jet expansion has been demonstrated. In the case of the bromocarbene, the LIF-excitation spectral measurements represent the first direct observations of this species. Visible spectra for both HCBr and DCBr have been obtained and are in accord with expectations for a species with nonlinear ground-state and quasilinear excited-state geometries. For the protonated species the excited-state bending frequency is near 840 cm-1 when v2 = 5 and the C-Br stretching frequency is nu3 almost-equal-to 783 cm-1.

  DOI：

  10.1021/j100062a008

文献信息

• Electronic spectroscopy of bromomethylenes in a supersonic free jet expansion
  作者：Chia-Ling Lee、Mei-Lung Liu、Bor-Chen Chang

  DOI：10.1039/b307449h

  日期：——

  Laser excitation and dispersed fluorescence spectra of bromomethylenes (CBr2 and HCBr) between 546 and 576 nm have been recorded following their production in a plasma discharge in a supersonic free jet expansion. The analyses of the excitation and dispersed fluorescence spectra reveal several new vibrational levels of the CBr2 A state as well as the detailed vibrational structure of the state. In

  溴亚甲基（CBr2 和 HCBr）在 546 和 576 nm 之间的激光激发和分散荧光光谱已在超音速自由射流膨胀等离子放电中产生后被记录下来。激发和分散荧光光谱的分析揭示了 CBr2 A 态的几个新的振动能级以及该态的详细振动结构。此外，在激发光谱中发现了一个新的 A- HCBr 波段，并且还记录了在这个新的 HCBr 波段激发后的分散荧光光谱。首次确定了包括先前未知的 C-H 伸缩基频在内的 HCBr 1A' 态的完整振动结构，并首次确定了可见波长下三个 HCBr 波段的旋转常数。
• Spectroscopic Study of the ùA" - X^~¹A' System of CHBr
  作者：Seung-Keun Shin、Seung-Min Park

  DOI：10.5012/bkcs.2011.32.3.905

  日期：2011.3.20

  We report fluorescence excitation and emission spectra of the CHBr molecule generated via pyrolysis of $CH_3Br$ in a molecular beam experiment. The 193 nm attenuation cross sections were estimated from the reduction of the CHBr signal as a function of the excimer laser fluence. The derived 193 nm absorption cross section for CHBr [$(3.24\pm}0.59)\times}10^-17}\;cm^2$] is slightly higher than the absorption cross section previously determined for CHCl [$(2.6\pm}0.8)\times}10^-17}\;cm^2$], but the difference is within the estimated uncertainties in the measured cross section.

  我们报告了在分子束实验中通过热解 $CH_3Br$ 生成的 CHBr 分子的荧光激发和发射光谱。193 nm 衰减截面是根据 CHBr 信号的减少量与准分子激光通量的函数关系估算得出的。得出的 CHBr 193 nm 吸收截面[$(3.24\pm}0.59)\times}10^-17}\;cm^2$]略高于之前测定的 CHCl 吸收截面[$(2.6\pm}0.8)\times}10^-17}\;cm^2$]，但两者的差异在测量截面的估计不确定性范围内。
• Safiev, O. G.; Nazarov, D. V.; Zorin, V. V., Russian Journal of Physical Chemistry, 1988, vol. 62, # 11, p. 1642 - 1643
  作者：Safiev, O. G.、Nazarov, D. V.、Zorin, V. V.、Rakhmankulov, D. L.

  DOI：——

  日期：——
• Production of Halomethylenes in Free-Jet Expansions from a Hot Nozzle: Identification and Characterization of HCBr and DCBr by Laser-Induced Fluorescence Excitation Spectroscopy
  作者：Songlin Xu、Kyle A. Beran、Marlin D. Harmony

  DOI：10.1021/j100062a008

  日期：1994.3

  The efficient production of chloromethylene and bromomethylene by hot-nozzle pyrolysis and subsequent supersonic free-jet expansion has been demonstrated. In the case of the bromocarbene, the LIF-excitation spectral measurements represent the first direct observations of this species. Visible spectra for both HCBr and DCBr have been obtained and are in accord with expectations for a species with nonlinear ground-state and quasilinear excited-state geometries. For the protonated species the excited-state bending frequency is near 840 cm-1 when v2 = 5 and the C-Br stretching frequency is nu3 almost-equal-to 783 cm-1.