Post Transition Metal Coordination Chemistry

这个无机、生物无机和有机金属项目的奖项支持南卡罗来纳大学哥伦比亚分校化学系的Daniel L. Reger博士对过渡后金属配位化合物的研究，特别是Sn、Pb、Ga、in和Tl。这些化合物将包含双齿和三足-三齿聚（吡唑基）硼酸盐配体。根据金属的大小，它们之前表现出了不同的配位数。通过对吡唑环的改性，尝试对低聚程度进行立体控制。此外，还将合成氢化物、醇化物和酰胺衍生物，并研究新的烷基金属配合物的热分解。用核磁共振方法研究了先前制备的锡配合物的溶液结构。还计划对含有相关聚膦酰甲烷配体的化合物进行一些研究。第13族和第14族后面的元素，即锡、铅、镓、铟和铊，形成配位化合物的能力尚未得到广泛研究。本课题制备的新型配位化合物可用于化学气相沉积制备半导体和光电子器件。水溶性镓和铟配合物可能在放射性标记研究中找到用途。

This award in the Inorganic, Bioinorganic, and Organometallic Program supports research by Dr. Daniel L. Reger of the Chemistry Department, University of South Carolina at Columbia, on coordination compounds of post-transition metals, specifically, Sn, Pb, Ga, In, and Tl. Compounds will contain bidentate and tripod-tridentate poly(pyrazolyl)borate ligands, which have previously exhibited a variety of coordination numbers depending on the size of the metal. By modification of the pyrazolyl ring, steric control of the extent of oligomerization will be attempted. In addition, hydride, alkoxide and amide derivatives will be synthesized and thermal decomposition of new alkyl metal complexes will be studied. The solution structure of the previously-prepared tin complexes will be investigated using NMR methods. Some work on compounds containing related polyphosphinoylmethanide ligands is also planned. %%% The ability of the later elements of Groups 13 and Group 14, namely tin, lead, gallium, indium and thallium, to form coordination compounds has not been studied extensively. The new coordination compounds which will be prepared in this project may be useful for preparation of semiconductors and optoelectronic devices by chemical vapor deposition. Water-soluble gallium and indium complexes might find utility in radiolabeling studies.