Synthesis and characterization of binuclear Zn(II)–cyclen complexes bridged by α,ω-bis(4-methylphenoxy) alkanes
作者:Fuxian Wan、Changcheng Li、Lin Jiang、Ying Li
DOI:10.1007/s11164-012-0528-7
日期:2012.10
A series of novel α,ω-bis(4-methylphenoxy) alkane functionalized cyclen ligands were synthesized by the nucleophilic substitution reaction of 1,4,7-tris(tert-butyloxycarbonyl)-1,4,7,10-tetraazacyclododecane and α,ω-bis(4-bromomethylphenoxy) alkanes. The corresponding dimeric Zn(II)–cyclen complexes were obtained by reaction of these ligands with Zn(ClO4)2·6H2O. Ligands and complexes were characterized by FT-IR, 1H NMR, and elemental analysis.
Water-soluble homodimeric capsules resulting from the electrostatic and hydrophobic interactions between a tetracationic calixarene receptor and gemini guests having the negatively charged ends separated by a (–CH2–)n (n = 2–6) spacer are reported. The formation of the supramolecular capsules occurs through concerted hydrophobic and electrostatic interactions between the charged and aromatic groups
Utilizing ferrocene for doping Iron to graphitic carbon nitride (FeIII/g-C3N4): An internal dual photocatalyst for tandem oxidation/cyclization of toluene to benzimidazoles under visible light condition
photocurrent, SEM, HR-TEM, EDX, BET, EIS, and cyclic voltammetry analyses. The synthesis of benzimidazole derivatives as pharmaceutically active compounds was introduced by using a suitable method under mild reaction conditions without using a base, oxidant, and other reagents or additives. The modification by usingiron had a considerable effect on the optical and electronic characteristics in contrast
最近,考虑将金属掺杂到石墨碳氮化物 (gC 3 N 4 ) 中用于环境应用和有机反应。在这项研究中,我们使用二茂铁作为Fe 3+的来源将铁掺杂到gC 3 N 4上。内部电场支架被认为是提高光催化活性的一种令人印象深刻的策略。Fe 3+掺杂到石墨碳氮化物(Fe III /gC 3 N 4) 通过煅烧法,通过 FT-IR、Raman、XRF、XRD、XPS、UV-visible DRS、光致发光 (PL)、光电流、SEM、HR-TEM、EDX、BET、EIS 和循环伏安法分析。苯并咪唑衍生物作为药物活性化合物的合成是在不使用碱、氧化剂和其他试剂或添加剂的情况下,在温和的反应条件下采用合适的方法引入的。与gC 3 N 4相比,使用铁进行的改性对光学和电子特性具有相当大的影响。纳米复合材料 Fe III /gC 3 N 4可用作多功能光催化剂进行串联过程,甲苯氧化,然后与邻苯二胺在可见光条件下制备苯并咪唑。Fe
Titania Nanorod-Supported Mercaptoundecanoic Acid-Grafted Palladium Nanoparticles as a Highly Reusable Heterogeneous Catalyst for Substrate-Dependent Ullmann Coupling and Debromination of Aryl Bromides
Herein, by implanting palladium nanoparticles (Pd NPs) onto titaniumdioxide (TiO2) nanorods (NRs) through 11-mercaptoundecanoic acid (MUA), we devised a robust heterogeneouscatalyst. The formation of Pd–MUA–TiO2 nanocomposites (NCs) was authenticated using Fourier transform infrared spectroscopy, powder X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray analysis, Brunauer–Emmett–Teller