| 1446250-73-2

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二苯乙烯类
• CAS: 1446250-73-2
• 化学式: C₅₆H₆₂O₄
• 分子量: 799.106
• InChiKey: RCXRHAHNKWILCQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  13.34
• 重原子数：
  60.0
• 可旋转键数：
  18.0
• 环数：
  13.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  52.6
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  、 在 potassium tert-butylate 作用下， 以 四氢呋喃 为溶剂， 反应 13.0h， 以41%的产率得到
  参考文献：
  名称：

  Blending Through-Space and Through-Bond π–π-Coupling in [2,2′]-Paracyclophane-oligophenylenevinylene Molecular Wires

  摘要：

  A series of ZnP-pCp-oPPV-C-60 conjugates covalently connected through [2,2']-paracyclophane-oligophenylenevinylene (pCp-oPPV) bridges containing one, two, and three [2,2']-paracyclophanes (pCps) has been prepared in multistep synthetic procedures involving Horner-Wadsworth-Emmons olefination reactions and/or Heck type Pd-catalyzed reactions. Molecular modeling suggests that charge transfer is effectively mediated by the pCp-oPPVs through a predominant hole-transfer mechanism. Photophysical investigation supports molecular modeling and reveals two major trends. On one hand, C-60 excitation of 1, 2, and 3 leads exclusively to charge transfer between pCp and C-60 to afford a ZnP-(pCp-oPPV)(circle+)-C-60(circle-) radical ion pair state without giving rise to a subsequent charge shift to yield the ZnP circle+-pCp-oPPV-C-60(circle-) radical ion pair state. On the other hand, ZnP excitation of 1, 2, and 3 results in a rather slow charge transfer between ZnP and C-60, after which the ZnP circle+-pCp-oPPV-C-60(circle-) radical ion pair state evolves. In temperature-dependent ZnP fluorescence experiments, which were performed in the temperature range from 273 to 338 K, two domains are discernible: low and high temperature behaviors. In the low temperature range (i.e., below 30 degrees C) the rate constants do not change, suggesting that a superexchange mechanism is the modus operandi. In the high temperature range (i.e., >30 degrees C) the rate constants increase. Moreover, we find rather strong distance dependence for 1 and 2 and weak distance dependence for 2 and 3. A damping factor of 0.145 angstrom(-1) is derived for the former pair and 0.012 angstrom(-1) for the latter.

  DOI：

  10.1021/ja401239r
• 作为产物：
  描述：

  4,12-dibromo[2.2]paracyclophane 在 四(三苯基膦)钯 、 正丁基锂 、 四丁基溴化铵 、 palladium diacetate 、 potassium carbonate 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 15.0h， 生成
  参考文献：
  名称：

  Blending Through-Space and Through-Bond π–π-Coupling in [2,2′]-Paracyclophane-oligophenylenevinylene Molecular Wires

  摘要：

  A series of ZnP-pCp-oPPV-C-60 conjugates covalently connected through [2,2']-paracyclophane-oligophenylenevinylene (pCp-oPPV) bridges containing one, two, and three [2,2']-paracyclophanes (pCps) has been prepared in multistep synthetic procedures involving Horner-Wadsworth-Emmons olefination reactions and/or Heck type Pd-catalyzed reactions. Molecular modeling suggests that charge transfer is effectively mediated by the pCp-oPPVs through a predominant hole-transfer mechanism. Photophysical investigation supports molecular modeling and reveals two major trends. On one hand, C-60 excitation of 1, 2, and 3 leads exclusively to charge transfer between pCp and C-60 to afford a ZnP-(pCp-oPPV)(circle+)-C-60(circle-) radical ion pair state without giving rise to a subsequent charge shift to yield the ZnP circle+-pCp-oPPV-C-60(circle-) radical ion pair state. On the other hand, ZnP excitation of 1, 2, and 3 results in a rather slow charge transfer between ZnP and C-60, after which the ZnP circle+-pCp-oPPV-C-60(circle-) radical ion pair state evolves. In temperature-dependent ZnP fluorescence experiments, which were performed in the temperature range from 273 to 338 K, two domains are discernible: low and high temperature behaviors. In the low temperature range (i.e., below 30 degrees C) the rate constants do not change, suggesting that a superexchange mechanism is the modus operandi. In the high temperature range (i.e., >30 degrees C) the rate constants increase. Moreover, we find rather strong distance dependence for 1 and 2 and weak distance dependence for 2 and 3. A damping factor of 0.145 angstrom(-1) is derived for the former pair and 0.012 angstrom(-1) for the latter.

  DOI：

  10.1021/ja401239r