Stibane and the anions SbCO- and SbH2- as synthetic building blocks in organometallic molecular chemistry

锑烷和阴离子 SbCO- 和 SbH2- 作为有机金属分子化学中的合成构件

• 批准号: 503970736
• 负责人: Professor Dr. Carsten von Hänisch
• 金额: --
• 依托单位: Fachgebiet Anorganische Chemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/503970736?language=en
• 关键词: Stibane; anions; SbCO; SbH2; synthetic

Antimony compounds have many applications and can be found in a wide variety of household items such as rewritable DVDs or as fire retardants in furniture or electrical appliances. All common syntheses of antimony compounds start from the element, the oxides and sulphides, the antimony halides or substituted stibanes such as Sb(SiMe3)3. In contrast, the ions PCO- and AsCO- have established themselves as versatile synthesis building blocks in arsenic and especially phosphorus chemistry in recent years. However, a corresponding synthetic building block is not yet known in antimony chemistry. This project pursues two goals, both of which are based on stibine as starting compound. The project is based on the experience of the working group on the application of antimony hydrogen in molecular chemistry. In subproject A, the SbH2- anion will be synthesised by mild deprotonation of SbH3 at low temperatures. This will then be used for the targeted synthesis of new primary stibanes and new antimony-bridged coordination compounds. For this purpose, different salts of the type [M(L)SbH2] with different ligands (L) and different alkali metal cations (M) will be prepared and investigated concerning their stability and reaction behaviour. Subproject B deals with the preparation of the anions SbCE- (E = O, S, Se) and their use in synthesis. The preparation of these ions is investigated starting from SbH3 and starting from the compounds of the type [M(L)SbH2] prepared in subproject A. Subsequently the synthetic potential of these SbCE- ions is investigated which opens up new avenues in antimony chemistry. For example, it is possible to synthesise low-valent species by transferring "Sb-" ions, the production of new coordination compounds with the ions mentioned or cycloaddition reactions to produce completely new organic compounds of antimony. This will open up versatile antimony chemistry that is not accessible with the previously common starting compounds of this element.The subprojects A and B are preceded by investigations into the resource-efficient production of SbH3 and its storage.

锑化合物有许多用途，可以在各种家用物品中找到，如可重写DVD，或用作家具或电器的阻燃剂。所有常见的锑化合物的合成都是从元素、氧化物和硫化物、卤化锑或取代的茂金属化合物如Sb(SiMe3)3开始的。相比之下，PCO-和ASCO-离子近年来在砷特别是磷化学中已成为多功能的合成构件。然而，在锑化学中，还不知道相应的合成构件。这个项目追求两个目标，这两个目标都是以二苯乙烯为起始化合物。该项目基于氢化锑在分子化学中的应用工作组的经验。在子项目A中，将通过SbH3在低温下温和的去质子化来合成SbH2-阴离子。然后，这将被用于定向合成新的伯二苯乙烯和新的锑桥联配位化合物。为此，我们将制备具有不同配体(L)和不同碱金属阳离子(M)的[M(L)SbH_2]型盐，并对其稳定性和反应行为进行研究。子项目B涉及阴离子SbCE-(E=O，S，Se)的制备及其在合成中的应用。从SbH_3开始，从子项目A中合成的[M(L)SbH_2]开始，研究了这些离子的合成，为锑化学开辟了新的途径。例如，可以通过转移“Sb-”离子来合成低价物种，与上述离子产生新的配位化合物，或者通过环加成反应生成全新的有机锑化合物。这将开启多功能的锑化学，这是以前这种元素的常见起始化合物无法获得的。在分项目A和B之前，将对SbH3的资源效率生产及其储存进行调查。