International Collaboration in Chemistry: Synthesis and Spectroscopy of Reduced Bis(imino)pyridine Iron Compounds

在这个由化学部化学催化项目资助的国际化学合作（ICC）项目中，美国普林斯顿大学的Paul J. Chirik和德国马普生物无机化学研究所的Karl E. Wieghart合作，共同努力了解具有氧化还原活性的双（亚胺）吡啶配体在催化中应用的贱金属化合物的电子结构。小分子活化和基团（和原子）转移过程。具体来说，该团队将专注于铁、锰和钴的氧和氮化合物的合成，这些化合物可能提供与有机合成和替代能源方案相关的新氢化、碳氢活化和基团转移化学。长期的努力将超越双（亚胺）吡啶配体支架，并进入贱金属催化，光化学水分解和光收集技术的新支持架构。铂、铑、铱等贵金属在催化方面有广泛的应用；然而，这些金属就像石油一样，是稀缺的自然资源。使用贱金属催化剂，例如在这项工作中使用的催化剂，可能使受供应链短缺和政治不稳定影响较小的新技术成为可能。此次合作将合成和催化（Chirik）方面的专业知识与光谱学和理论（Weighart）相结合，使两个小组的成员对科学以及合作机构和国家的文化有了广泛的了解。这种合作也为科学推广和学生教育提供了新的机会，包括：进入高场EPR，共振拉曼和MCD光谱的暑期学校，以及创建免费分发的基于网络的程序和教程，用于处理和适应光谱和磁数据。大西洋两岸的研究人员都通过美国的“拓展你的视野”项目和德国的“研究所女生日”项目来吸引女性参与科学研究。DFG将为德国调查人员提供支持资金，而NSF将支持美国的努力。

In this International Collaboration in Chemistry (ICC) project funded by the Chemical Catalysis Program of the Chemistry Division, Paul J. Chirik, Princeton University, U.S. and Karl E. Wieghart, Max Planck Institute for Bioinorganic Chemistry, Mülheim, Germany collaborate in a joint effort to understand the electronic structure of base metal compounds with redox-active bis(imino)pyridine ligands that find application in catalysis, small molecule activation and group (and atom) transfer processes. Specifically, the team will focus on the synthesis of iron, manganese and cobalt oxo and nitride compounds that may offer new hydrogenation, C-H activation, and group transfer chemistries of relevance to organic synthesis and alternative energy schemes. Longer term efforts will move beyond the bis(imino)pyridine ligand scaffolds and into new supporting architectures for base metal catalysis, photochemical water splitting and light harvesting technologies. Precious metals such as platinum, rhodium and iridium have found widespread application in catalysis; however these metals, much like petroleum, are scarce natural resources. The use of base metal catalysts, such as those used in this work, may enable new technologies which are less influenced by shortages and political instabilities in the supply chain. The collaboration combines the expertise in synthesis and catalysis (Chirik) with spectroscopy and theory (Weighart) to give members of both groups a broad perspective into science as well as the culture of their partner institution and country. This collaboration also provides new opportunities for scientific outreach and student education including: access to summer schools in high field EPR, resonance Raman and MCD spectroscopy and the creation of freely distributable web-based programs and tutorials for the handling and fitting of spectroscopic and magnetic data. Researchers on both sides of the Atlantic Ocean are involved in engaging women in the sciences through the "Expanding Your Horizons" program in the U.S. and the "Girls Day at the Institute" program in Germany. The DFG will provide support funds for the German investigators while the NSF will support the U.S. efforts.