Harnessing the Unusual Electronic Properties of the Ketimide Ligand: The Pursuit of High Oxidation State Metal Ions and Metal-Metal Bonds

化学部化学合成(SYN)计划颁发的这一奖项支持加州大学圣巴巴拉分校的Trevor W.Hayton教授开展关于分子在不寻常氧化状态下的合成和反应性的基础研究。通常，这些分子有能力实现具有挑战性的键形成和键激活反应；这些反应与各种催化过程相关。此外，这些络合物进一步加深了我们对金属-配体成键的理解，并有助于验证新的计算方法。这些分子由ketimide配体稳定，该配体具有轨道相互作用的组合，使其能够稳定高氧化态和低氧化态。该奖项资助的基础研究促进了我们对地球丰富元素化学的理解，并有助于向碳中性、可持续经济的过渡。这项工作的更广泛影响包括潜在的社会效益，如将这些材料用于催化或磁信息存储，以及培训本科生和研究生合成和表征无机和有机金属配合物。海顿教授帮助组织了南加州有机金属学会议(SoCal OrganMetallics)。这次会议允许来自南加州的有机金属学生介绍他们的最新研究成果，并与邻近机构的学生和教职员工进行互动。本项目特别关注地球上丰富的元素、锰、铁和铜的凯替米特络合物。人们正在使用各种技术来研究它们的性质，包括核磁共振光谱、X射线结晶学和SQUID磁测量。它们与一氧化碳、二氧化碳和乙烯等小分子的反应性也在探索中。

This award from the Chemical Synthesis (SYN) Program of the Chemistry Division supports work by Professor Trevor W. Hayton at the University of California Santa Barbara to carry out fundamental studies on the synthesis and reactivity of molecules in unusual oxidations states. Often, these molecules have the ability to effect challenging bond forming and bond activation reactions; reactions that are relevant to a wide variety of catalytic processes. In addition, these complexes further our understanding of metal-ligand bonding and help to validate new computational methodologies. These molecules are stabilized by the ketimide ligand, which possesses a combination of orbital interactions that permits it to stabilize both high and low oxidation states. The basic research funded by this award advances our understanding of the chemistry of the earth abundant elements and assists in the transition to a carbon-neutral, sustainable economy. The broader impacts of this work include potential societal benefits, such as the use of these materials in catalysis or magnetic information storage, as well as the training of undergraduate and graduate students in the synthesis and characterization of inorganic and organometallic complexes. Professor Hayton helps organize the Southern California Organometallics meeting (SoCal Organometallics). This meeting allows organometallic students from Southern California to present their current research and interact with students and faculty from neighboring institutions.This project pays particular focus on ketimide-containing complexes of the earth abundant elements, manganese, iron, and copper. Their properties are being studied using a variety of techniques, including NMR spectroscopy, X-ray crystallography, and SQUID magnetometry. Their reactivity with small molecules, such as carbon monoxide, carbon dioxide, and ethylene, is also being explored.