1-Bromoeicosane-20,20,20-D3

• 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: 1-Bromoeicosane-20,20,20-D3
• 英文别名: 20-bromo-1,1,1-trideuterioicosane
• 化学式: C₂₀H₄₁Br
• 分子量: 364.426
• InChiKey: CZASMUMJSKOHFJ-FIBGUPNXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  11.4
• 重原子数：
  21
• 可旋转键数：
  18
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 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：

  氰化钠 、 1-Bromoeicosane-20,20,20-D3 以 N,N-二甲基乙酰胺 为溶剂， 生成 21,21,21-Trideuteriohenicosanenitrile
  参考文献：
  名称：

  Vibrational Spectra, Orientations, and Phase Transitions in Long-Chain Amphiphiles at the Air/Water Interface: Probing the Head and Tail Groups by Sum Frequency Generation

  摘要：

  IR + visible sum frequency generation (SFG) has been used to obtain the vibrational spectra and orientations for both the nitrile (CN) head group and the methyl (CD3) tail of the insoluble long-chain amphiphile CD3(CH2)(19)CN at the air/water interface. The results show that the orientations of the head group and the terminal group vary with amphiphile surface density, but in markedly different ways. It is found at the amphiphile density, which corresponds to the phase transition from the gas/liquid coexistence region to the liquid region, that the hydrogen bonds of the CN head groups to water are broken, the water is squeezed out of the monolayer, and the orientation of the head group changes sharply. The possibility that the rupturing of the hydrogen bonds and reorientation of the CN head groups may be the trigger for the phase transition is discussed. In addition to the SFG study of the amphiphile at the air/water interface, a method was discovered that enables SFG to remove the ambiguity in the ratio of the two Raman polarizability elements for a symmetric stretch. Depolarization measurements in linear Raman experiments cannot determine whether the ratio of elements is greater than or less than one, whereas the SFG method can.

  DOI：

  10.1021/j100102a045