Synthetic studies of unusual s-block metal complexes stabilised by sterically demanding ligands

元素周期表中的S块含有几种廉价的、地球上丰富的、与生物相容的金属，如Na、K、Mg和Ca。近年来，定义明确的S嵌段金属配合物的化学研究取得了许多进展，包括新的金属氢化物配合物，具有不寻常的碱性和亲核碎片的新的稳定化合物，以及活性低的氧化态物种。其中许多配合物为反应和催化提供了新的途径。该项目将拓展和推进定义明确的S嵌段金属络合物的化学研究。它将包括合成和表征，例如通过核磁共振谱和X射线单晶衍射研究新的和新的配合物，并研究其进一步的反应活性。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。具体目标包括新的金属氢化物片段、新的亲核分子片段和涉及S-嵌段元素的新的稀有低氧化态物种。对空间要求很高的配体的范围将包括β-二酮基配体和其他阴离子和中性N-配体，如磷酰胺和亚胺基膦杂环化合物。例如，将研究新合成的物种对一系列有机底物和小分子的反应性，包括与工业相关的气体。

The s-block of the periodic table contains several cheap, Earth abundant and biocompatible metals such as Na, K, Mg and Ca. The chemistry of well-defined s-block metal complexes has seen numerous advances in the past years including novel metal hydride complexes, new stable compounds with unusual basic and nucleophilic fragments, and reactive low oxidation state species. Many of these complexes have provided new approaches for reactivity and catalysis. This project will expand and advance the chemistry of well-defined s-block metal complexes with novel molecular fragments. It will include the synthesis and characterisation e.g. by NMR spectroscopy and X-ray single crystal diffraction studies of new and novel complexes and the study of their further reactivity. Sterically demanding ligands will be employed to stabilise unusual inorganic and organometallic molecular fragments. Specific targets include novel metal hydride fragments, novel nucleophilic molecular fragments and new rare low oxidation state species involving s-block elements. The range of sterically demanding ligands will include beta-diketiminate ligands and other anionic and neutral N-ligands such as phosphinoamides and iminophosphoranes. The reactivity of newly synthesised species will be investigated for example towards a range of organic substrates and small molecules including industrially relevant gases.