1,2-bis-(3,4-diethoxyphenyl)ethanedione | 138145-21-8

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二苯乙烯类
• 英文名称: 1,2-bis-(3,4-diethoxyphenyl)ethanedione
• 英文别名: 3,3',4,4'-tetraethyloxybenzyl；3,4,3',4'-tetraethoxy-benzil；3,4,3',4'-Tetraaethoxy-benzil；1,2-Bis(3,4-diethoxyphenyl)ethane-1,2-dione
• CAS: 138145-21-8
• 化学式: C₂₂H₂₆O₆
• 分子量: 386.445
• InChiKey: CZAONFUZBGZGRU-UHFFFAOYSA-N

物化性质

• 沸点：
  544.1±50.0 °C(Predicted)
• 密度：
  1.128±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.3
• 重原子数：
  28
• 可旋转键数：
  11
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  71.1
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  potassium tetrachloroplatinate(II) 、 tetraphosphorus decasulfide 、 1,2-bis-(3,4-diethoxyphenyl)ethanedione 以 1,4-二氧六环 、 乙二醇 为溶剂， 以48%的产率得到bis[1,2-bis(3',4'-di-ethyloxyphenyl)ethane-1,2-dithiolene]platinum
  参考文献：
  名称：

  Discotic liquid crystals of transition metal complexes 25: influence of the central metal on columnar mesomorphism and π-acceptor properties of the octa-alkoxy-substituted bis(diphenyldithiolene)metal complexes

  摘要：

  In order to investigate the influence of the central metal on mesomorphism and a-acceptor properties of the octa-alkoxy-substituted metal complexes, novel homologs, bis [di(n-alkoxy)phenyldithiolene]palladium and bis[di(n-alkoxy)phenyldithiolene]platinum (n-alkoxy = CnH2n+1O, n = 1 to 12), have been synthesized. The mesophases were established by microscopic observations, DSC, and temperature-dependent X-ray diffraction techniques. As reported previously, the nickel complexes show a Col(h) mesophase for n = 5 to 12. On the other hand, the present palladium and platinum complexes show a Col(h) mesophase for n = 4 to 12 and n = 6 to 12, respectively. Thus, they give the Col(h) mesophase for a shorter length of alkoxy chain in the order Pd, Ni, Pt. For 6 less than or equal to n less than or equal to 12, the clearing points become higher in the order Pt < Ni < Pd. The intracolumnar stacking distances of these Ni, Pd and Pt complexes were observed at 3.64 +/- 0.02, 3.56 +/- 0.03, and 3.73 +/- 0.02 Angstrom, respectively. Thus, they gave a longer stacking distance in the order Pt > Ni > Pd. Hence, the order of stacking distances is apparently related to the order of clearing points. Moreover, the Pt, Ni and Pd complexes show reduction potentials at - 0.09 +/- 0.01, - 0.055 +/- 0.005, and 0.00 less than or equal to 0.01 V (versus SCE in CH2Cl2), respectively. They become better pi-acceptors in the order Pt < Ni < Pd. We reveal from the electronic absorption spectra that the LUMO energy level of these metal complexes decreases in the order Pt < Ni < Pd, and that the back donation of electrons from the central metal to the ligand occurs more in the same order Pt < Ni < Pd. This results in better a-acceptor properties in the order Pt < Ni < Pd for the present complexes. (C) 2000 Elsevier Science Ltd All rights reserved.

  DOI：

  10.1016/s0277-5387(99)00356-3
• 作为产物：
  描述：

  3,4-二乙氧基苯甲醛 在 potassium cyanide 、 乙醇 作用下， 生成 1,2-bis-(3,4-diethoxyphenyl)ethanedione
  参考文献：
  名称：

  The Ultraviolet Absorption Spectra of Alkoxy- and Hydroxybenzils

  摘要：

  DOI：

  10.1021/ja01177a014

文献信息

• Discotic Liquid Crystals of Transition Metal Complexes. XVI. Discotic Mesomorphism and Unique Chromism of Bis[1,2-bis(3,4-dialkoxyphenyl)ethanedione dioximato]palladium(II) Complexes
  作者：Kazuchika Ohta、Mitsuo Moriya、Mayumi Ikejima、Hiroshi Hasebe、Tetsuya Fujimoto、Iwao Yamamoto

  DOI：10.1246/bcsj.66.3553

  日期：1993.12

  Bis[1,2-bis(3,4-dialkoxyphenyl)ethanedione dioximato]palladium(II) complexes, (abbreviated [Pd(CnO)4dpg}2]; n = 1—12)have been synthesized and characterized. It was found that each of the [Pd(CnO)4dpg}2] (n = 2—12) complexes has an enantiotropic discophase (Dhd). The clearing points of the [Pd(CnO)4dpg}2] (n = 4, 8, 12) complexes are higher than those of the corresponding [Ni(CnO)4dpg}2] (n = 4, 8, 12) complexes. Interestingly, the [Pd(CnO)4dpg}2] complexes exhibit thermochromism and solvatochromism similar to that of [Ni(CnO)4dpg}2] complexes.

  双[1,2-双(3,4-二烷氧基苯基)乙二酮二氧亚氨]钯(II)配合物（缩写为[Pd(CnO)4dpg}2]；n = 1-12）已被合成并表征。研究发现，每个[Pd(CnO)4dpg}2]（n = 2-12）配合物都有一个对映盘相（Dhd）。Pd(CnO)4dpg}2]（n = 4、8、12）复合物的清点高于相应的[Ni(CnO)4dpg}2]（n = 4、8、12）复合物的清点。有趣的是，[Pd(CnO)4dpg}2] 复合物表现出的热致变色和溶致变色与[Ni(CnO)4dpg}2] 复合物相似。