[Co(III)(acetylacetonato)2(3-[4'-(4''-(n-butoxy)phenylazo)phenyl]pentane-2,4-dionato)] | 1038932-41-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: [Co(III)(acetylacetonato)2(3-[4'-(4''-(n-butoxy)phenylazo)phenyl]pentane-2,4-dionato)]
• CAS: 1038932-41-0
• 化学式: C₃₁H₃₇CoN₂O₇
• 分子量: 608.637
• InChiKey: RDXUIOLFTRUUBZ-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  cobalt(III) acetylacetonate 、 3-[4'-(4''-(n-butoxy)phenylazo)phenyl]pentane-2,4-dione 在 BF₃*CH₃COOH 、 CH₃COOK 作用下， 以 二氯甲烷 为溶剂， 以3%的产率得到[Co(III)(acetylacetonato)2(3-[4'-(4''-(n-butoxy)phenylazo)phenyl]pentane-2,4-dionato)]
  参考文献：
  名称：

  Induction and Structural Control of Chiral Nematic Phases by the Use of Photoresponsive Tris(β-diketonato) Co(III) and Ru(III) Complexes

  摘要：

  Two kinds of tris(beta-diketonato) metal(III) complexes denoted as [M(acac)(2)(LC12)] and [M(acac)(2)(L-azo)] (M = Ru(III) and Co(III); acac = acetylacetonato; LC12 = 1,3-didodecyloxyphenyl-1,3-propanedionato; L-azo = 3-[4'-(4 ''-(butoxy)phenylazo)phenyl]-pentane-2,4-dionato) were synthesized and optically resolved into A, A isomers. Here, LC12 and L-azo were designed to be elongated perpendicular to and in parallel with the molecular C-2 axis, respectively. The metal complexes were doped into three kinds of nematic liquid crystals (MBBA, EBBA, and ZLI-1132). Both dopants induced chiral nematic phases with relatively high helical twisting powers. With a purpose to clarify the mechanisms of helical induction, order parameters (S) were determined by means of polarized UV-vis measurements on nematic samples doped with racemic Co(III) complexes. As a result, the long axes of the elongated ligands in both [Co(acac)(2)(LC12)] and [Co(acac)(2)(trans-L-azo)] were found to align in the direction of the director vector with S = 0.50 +/- 0.05 and 0.60 +/- 0.05, respectively. Based on the results, the photoresponsive behavior of Delta- or Lambda-[Ru(acac)(2)(L-azo)] was interpreted in terms of the variation of S accompanied with the cis-trans isomerization of the azobenzene moiety in L-azo.

  DOI：

  10.1021/jp8011206