metallocage was also realized by using two self‐recognizable tritopic building blocks. The photophysical study of the metallo‐supramolecules assembled from the d10 metal ions revealed intense ligand‐based photoluminescence in solution. The self‐assembly strategy described here provides an efficient methodology for building pre‐programmable, sophisticated supramolecular architectures furnished with photoactivity
通过在6,6''-二(2,6-二甲氧基苯基)-取代的和未取代的基于联吡啶的配体的组合下,可以在环境条件下自发形成杂合镉(II)双(叔吡啶)络合物。在这种动态杂合剂络合的基础上,可以很容易地从预先设计的多组分系统中以定量产率组装各种金属-超分子大环化合物和笼子。互补的结扎增强了自我识别能力,有助于将四成分动态库的形状依赖型自分类分为两个明确定义的平行四边形。另外,纯合和杂合复合物之间的微妙的不稳定性导致定点选择性Cd II –Zn IISierpiński三角形中的重金属化。通过使用两个可自我识别的三位构造单元,也可以轻松构建十二面体四面体金属位点。由d 10个金属离子组装而成的金属超分子的光物理研究表明,溶液中存在强的基于配体的光致发光。此处描述的自组装策略为构建具有光活性的可预编程,复杂的超分子体系结构提供了一种有效的方法。
Catalytic halogenation of selected organic compounds mimicking vanadate-dependent marine metalloenzymes
作者:Chimmanamada U. Dinesh、Rajiv Kumar、Bipin Pandey、Pradeep Kumar
DOI:10.1039/c39950000611
日期:——
The ammonium metavanadate, mimicking vanadate-dependent metalloenzymes, efficiently catalyses the halogenation of a variety of organic substrates in dilute conditions in moderate to good yields using dilute hydrogen peroxide (30%) as an oxidizing agent exhibiting remarkable ortho selectivity with electron-rich aromatics.
A general procedure for the synthesis of methylthio-, methylseleno- and methyltelluro-substituted aromatic compounds
作者:Lars Engman、Jonas S.E. Hellberg
DOI:10.1016/0022-328x(85)80366-1
日期:1985.12
A one-pot procedure is described which allows the facile introduction of one or two methylchalcogeno groups into a variety of monobromo or dibromo aromatics. The bromo compounds were converted to their corresponding lithio derivatives by treatment with t-butyllithium in tetrahydrofuran at −78°C, and these derivatives were then treated, at ambient temperature with elemental sulfur, selenium, or tellurium
calix-like shape, the structural diversity of assemblies is mostly restricted to dimeric and hexameric capsules. Previously, we reported a spontaneous heteroleptic complexation strategy based on a pair of self-recognizable terpyridine-based ligands and CdII ions. Building on this complementary ligand pairing system, herein three types of nanocapsules, including a dimeric capsule, a Sierpiński triangular prism