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

元素周期表的P区包含几种廉价且富含稀土的元素，通常用于合成和催化。主族化学在过去二十年中取得了很大进展，实现了通过新的、空间要求很高的基团和配体稳定非常不寻常的化合物的新概念，并实施了新的反应活性方法，例如使用低氧化态物种和受挫的Lewis对。这个项目将研究配体稳定的p-嵌段元素的几个新的化学方面，主要是元素周期表的13-15族。这将包括由一系列空间要求高的配体稳定的低氧化态化合物的合成、表征和相关的反应性研究，这些配体包括B-二酮酸酯、阴离子亚氨基磷烷、磷酰胺和其他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/或非成键电子的新型化合物，例如孤对。另一个要测试的概念将是p-块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(例如磷烷)。所有项目都将包括新化合物的合成和表征(例如，通过核磁共振波谱和X射线单晶衍射研究)，以及对其进一步反应性的研究。空间要求很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。配体可以根据它们的空间和电子参数进行定制。例如，将研究新物种对一系列有机底物和小分子的反应能力，包括与工业相关的气体。

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.