Synthesis and liquid crystalline behavior of a series of ferrocene 1,1′-bis-azino-derivatives

A series of liquid-crystalline ferrocene derivatives, Fe{C₅H₄-C(CH₃)=N-N=CH-C₆H₃(X)-OOC-C₆H₄-OC _n H_2n+1}₂ (X = H, OH;n = 3 to 12), were obtained by the condensation of 1,1 -bishydrazondiacetylferrocene withp-alkoxybenzoyloxybenzaldehides. According to DSC and polythermic microscopy, all of the compounds exhibit an enantiotropic nematic mesophase in the 150–230 °C temperature range. A polycrystalline transition precedes the nematic transition. The liquid crystalline properties of the obtained compounds were investigated with respect to the number of carbon atoms in the terminal alkyl chain and the terminal hydroxyl group. The composition and structure of the obtained compounds were determined by elemental analysis and IR and NMR spectroscopy.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 358–361, February, 1995.This work was carried out with financial support from the Russian Fundation for Basic Research (Project No. 94-03-08978).     

硅表面含二茂铁基团自组装单分子膜制备及电流-电压关系测量

合成了一种头基为二茂铁基团的长链烯烃分子(Fc-CO-NH-(CH₂)₉-CH=CH₂) (FcUA)，并用红外、核磁、质谱等手段对其进行了表征。用微波引发将该化合物嫁接到平面硅的表面，并用X射线光电子能谱、反射红外光谱、原子力显微镜表征了这一过程。最后，通过循环伏安电化学法和电敏感原子力显微镜的导电模式对其进行电学性质测试。结果表明这层单分子膜可以提高硅片的介电常数。同时还观察到了一种不稳定的类似负微分电流现象。     

Derivatives of 1,1′-bis(diphenylphosphino)ferrocene (dppf): Electrochemistry, complexation and the X-ray structures of 1,1′-bis(diphenylphosphino)osmocene (dppo) and [PdCl2(dppo)]

The oxidative electrochemistry of 1,1′-bis(diphenylphosphino)osmocene (dppo) and 1,1′-bis(diphenylarsino)ferrocene (dpaf) was studied in dichloromethane with tetrabutylammonium hexafluorophosphate as the supporting electrolyte. The [MCl₂(P^∩P)] (M = Pd or Pt; P^∩P = dppo or 1,1′-bis(diphenylphosphinoindenyl)iron) complexes were prepared, studied electrochemically and the X-ray structures of dppo and [PdCl₂(dppo)] were determined.     

Synthesis, structure and biological activity of 1-(1-methoxy-1-ferrocenyl-3-arylpropan-2-yl)-1H-1,2,4-triazole derivatives

A total of eleven new 1-(1-methoxy-1-ferrocenyl-3-arylpropan-2-yl)-1H-1,2,4-triazole derivatives have been synthesized from acetylferrocene. The structures of the title compounds have been determined by elemental analysis, ¹H-NMR and single crystal X-ray diffraction analysis. Bioassay showed that some of the title compounds had high plant-growth regulatory activity. __________ Translated from Chinese Journal of Organic Chemistry, 2005, 25(8) (in Chinese)     

Synthesis and electrochemical studies of ferrocene-dithiafulvalenes (Fc-DTF) and 1,1′-bis(dithiafulvalenyl)ferrocene (DTF-Fc-DTF). An approach towards new conducting organic materials

Novel π-conjugated donor compounds based on the strong electron-donating ferrocene moiety and dithiafulvalene donors exhibited increased electron donor ability. The ferrocenylketones 4a,b, 5, 8 and 9 were synthesized via described methods, and allowed to react with 2-dimethoxyphosphinyl-1,3-benzodithiole (13) in the presence of n-BuLi at −78°C in dry THF to afford the corresponding ferrocene-dithiafulvalenes 14a,b, 18, 19 and 1,1′-bis(benzo-1,3-dithiol-2-ylidene)ethyl]ferrocene (15). Electrochemical properties of these new donor compounds were studied using cyclic voltammetry (CV) and UV-Vis spectra. CV and absorption spectra of the new compounds were studied in comparison with ferrocene (6) and dibenzo-tetrathiafulvalene DB-TTF 3. Two-electron and three-electron redox behaviors were observed as two waves. The absorption spectra showed a red-shift with a slight increase in the absorption intensities.     

Synthesis and Characterization of Ferrocenyl Substituted Styryl Octasilsesquioxane

4-(2-Ferrocenylethenyl)-phenyl-POSS Fc-CH=CH-C6H6-(C5H9)7Si8O12 (FEPS, Fc: ferrocene), containing metal and C=C double bond, was firstly synthesized as a mixture of E/Z isomers by the Wittig reaction. The chemical structure of FEPS was characterized by FTIR, 1H-, 13Cand 29Si-NMR.     

Synthesis and spectral properties of mixedmeso-metallocenylporphyrins

A series of mixed porphyrins with different numbers of metallocenyl (ferrocenyl and cymantrenyl) and aryl (Ph and C₆F₅) groups at themeso-positions was obtained and characterized by¹H NMR, electronic absorption, and mass spectra. The downfield shift of NH signals as well as the bathochromic shift ofQ-bands can be attributed to a distortion of the porphyrin macrocycle upon the introduction of bulkymeso-substituents. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 1045–1049, May, 1998.     

1-(1-甲氧基-1-二茂铁基-3-芳基-丙烷-2-基)-1H-1,2,4-三唑类衍生物的合成及生物活性研究

通过在三唑类活性结构中引入较大空间位阻的二茂铁基设计合成了11个新颖的含二茂铁取代的1H-1,2,4-三唑类化合物, 其结构经元素分析, ¹H NMR谱和单晶X-ray衍射分析得到确证. 初步的生物活性测试表明, 部分化合物具有明显的植物生长调节活性.     

新型链状双取代二茂铁甲酸酚酯的合成

由双取代二茂铁甲酰氯与烷基酚反应，合成了具有新型链状结构的八个二茂铁双取代衍生物。