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Stabilisation and Reactivity of Phosphenium Ions with Extended pi-electron Systems

扩展π电子系统的磷离子的稳定性和反应性

基本信息

批准号：
63997566
负责人：
Professor Dr. Dietrich Gudat
金额：
--
依托单位：
Institut für Anorganische Chemie (IAC)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2008
资助国家：
德国
起止时间：
2007-12-31 至 2010-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/63997566?language=en
关键词：
Stabilisation Reactivity Phosphenium Ions Extended

项目摘要

Phosphenium ions with a two-coordinate phosphorus atom exhibit a unique Lewisambiphilic reactivity which has enabled the syntheses of new phosphorus based materials and was employed in various applications in synthesis and catalysis. To extend the potential of phosphenium salts to innovative areas such as reactions in ionic liquids or the preparation of π-conducting materials, new types of phosphorus cations are needed which exhibit both optimum stability and efficient interaction of the electron deficient phosphorus atom with conjugated multiple bond systems. This project seeks to join the expertise of the research groups of the two applicants in the fields of synthetic and computational chemistry, respectively, to pursue the development of such cations. The combination of computational with advanced synthetic methodology is in this approach essential for the creation of new knowledge on the electronic structure of the target species and produces synergisms by allowing a systematic direction of the experimental research. Challenges lie in the development of new types of aromatic phosphenium ions and their complexes which may participate in singleelectron transfer processes, the characterisation of the redox behaviour of these species, and the development of a thorough understanding of their electronic and chemical properties as precondition for further applications.

具有双配位磷原子的膦离子表现出独特的路易斯两亲反应性，这使得能够合成新的磷基材料，并在合成和催化的各种应用中使用。为了将磷鎓盐的潜力扩展到创新领域，例如离子液体中的反应或π-导电材料的制备，需要新型的磷阳离子，其表现出最佳的稳定性和缺电子磷原子与共轭多重键系统的有效相互作用。该项目旨在结合两个申请人的研究小组在合成和计算化学领域的专业知识，分别追求这种阳离子的发展。在这种方法中，计算与先进的合成方法的结合对于创造关于目标物种的电子结构的新知识是必不可少的，并且通过允许实验研究的系统方向来产生协同作用。面临的挑战在于开发新型的芳香族磷鎓离子及其络合物，它们可能参与单电子转移过程，表征这些物种的氧化还原行为，以及深入了解其电子和化学性质作为进一步应用的先决条件。