tetrakis(5-hydroxypenthyl)pyromellite | 1251594-43-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: tetrakis(5-hydroxypenthyl)pyromellite
• 英文别名: Tetrakis(5-hydroxypentyl) benzene-1,2,4,5-tetracarboxylate；tetrakis(5-hydroxypentyl) benzene-1,2,4,5-tetracarboxylate
• CAS: 1251594-43-0
• 化学式: C₃₀H₄₆O₁₂
• 分子量: 598.688
• InChiKey: IUADVGZQQGYSDX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  42
• 可旋转键数：
  28
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  186
• 氢给体数：
  4
• 氢受体数：
  12

反应信息

• 作为产物：
  描述：

  1,5-戊二醇 、 均苯四甲酸 以 5,5-dimethyl-1,3-cyclohexadiene 为溶剂， 生成 tetrakis(5-hydroxypenthyl)pyromellite
  参考文献：
  名称：

  Synthesis and Relaxation Properties of Model Oligoester – Tetrakis(5-hydroxypentyl)piromelite

  摘要：

  The study of polymer properties requires the synthesis and analysis of simple model compounds. The aim of this work was the synthesis and investigation one of model compounds are needed to perform the physicochemical characteristics of linear, branched and dendrite polyesters. The description of relaxations processes of model oligoesters can make it easier to interpret the dependence between the useful properties of polyesters and the molecular structure of their macromolecules. Instrumental methods as NMR, FTIR and dielectric spectroscopy, calorimetry (DSC), thermo-gravimetric analysis and mechanical spectroscopy are used to this goal. The structure of the synthesized tetrakis(5-hydroxypentyl)piromelite (oligoester) was confirmed with the use of NMR, FTIR spectroscopy and elemental analysis. A detailed study of the relaxation properties using broadband dielectric spectroscopy and Dynamic Mechanical Thermal Analysis (DMTA) was also performed. A description of different dielectric and DMTA alpha-relaxation processes for the oligoester are indispensable to determine the relaxation properties of the suitable polyesters. For the synthesized oligoester glass temperature (T-g), relaxation time (tau) and activation energy (E-a) were determined from the results of DSC, DMTA and dielectric spectroscopy.

  DOI：

  10.1080/15421401003716163