Synthesis, characterisation and reactivity studies of unusual ligand-stabilised p-block element complexes

异常配体稳定的 p 区元素配合物的合成、表征和反应性研究

• 批准号: 2090097
• 金额: --
• 依托单位: University of St Andrews
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2090097
• 关键词: Synthesis; characterisation; reactivity; studies; unusual

The p-block of the periodic table contains several cheap and Earth abundant elements commonly used for synthesis and catalysis. Main group chemistry has seen great advances in the past two decades with the realisation of new concepts in the stabilisation of highly unusual compounds by novel, sterically demanding groups and ligands, and the implementation of novel approaches to reactivity, for example with low oxidation state species and frustrated Lewis pairs. This project will study several aspects of novel chemistry with ligand-stabilised p-block elements, mainly of groups 13-15 of the periodic table. This will include the synthesis, characterisation and associated reactivity studies of low oxidation state compounds stabilised by a series of sterically demanding ligands such as B-diketiminates, anionic iminophosphoranes, phosphinoamides and other N- and C-ligands, e.g. N-heterocyclic carbenes. This is envisaged to yield novel compounds with element-element bonds and/or non-bonding electrons such as lone pairs. Another concept to be tested will be the synthesis, characterisation and reactivity of p-block element hydride sources, ideally based on non-metal systems (e.g. phosphoranes). All project will include the synthesis and characterisation (e.g. by NMR spectroscopy and X-ray single crystal diffraction studies) of new and novel compounds and the study of their further reactivity. Sterically demanding ligands will be employed to stabilise unusual inorganic and organometallic molecular fragments. Ligands can be tailored with respect to their steric and electronic parameters. The reactivity of new species will be investigated for example towards a range of organic substrates and small molecules including industrially relevant gases.

元素周期表的p区包含几种廉价且地球丰富的元素，通常用于合成和催化。在过去的二十年里，随着通过新颖的、空间要求高的基团和配体来稳定高度不寻常的化合物的新概念的实现，以及对反应性的新颖方法的实施，例如与低氧化态物质和受挫的刘易斯对的实施，主族化学已经看到了巨大的进步。该项目将研究配体稳定的p区元素的新化学的几个方面，主要是周期表的13-15族。这将包括低氧化态化合物的合成，表征和相关的反应性研究，这些化合物通过一系列空间要求高的配体稳定，例如B-二酮亚胺，阴离子亚氨基膦，膦酰胺和其他N-和C-配体，例如N-杂环卡宾。这被设想为产生具有元素-元素键和/或非键合电子如孤对电子的新型化合物。另一个要测试的概念将是p区元素氢化物源的合成、表征和反应性，理想情况下是基于非金属系统（例如正膦）。所有项目将包括新化合物的合成和表征（例如通过NMR光谱和X射线单晶衍射研究）以及对其进一步反应性的研究。空间要求高的配体将被用来稳定不寻常的无机和有机金属分子片段。配体可以根据其空间和电子参数进行定制。新物种的反应性将被研究，例如对一系列有机底物和小分子，包括工业相关气体。