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计划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Karl E. Wieghart和德国米尔海姆的马克斯·普朗克生物无机化学研究所合作，共同努力了解具有氧化还原活性双（亚氨基）吡啶配体的贱金属化合物的电子结构，这些配体可用于催化、小分子活化和基团（和原子）转移过程。具体而言，该团队将专注于铁，锰和钴氧代和氮化物化合物的合成，这些化合物可能提供与有机合成和替代能源计划相关的新氢化，C-H活化和基团转移化学。长期的努力将超越双（亚氨基）吡啶配体支架，并进入新的支持架构，为贱金属催化，光化学水分解和光收集技术。贵金属如铂、铑和铱在催化中有着广泛的应用;然而，这些金属与石油一样，是稀缺的自然资源。使用贱金属催化剂，如本工作中使用的那些，可能会使新技术受到供应链中短缺和政治不稳定的影响较小。该合作将合成和催化（Chirik）与光谱学和理论（Weighart）的专业知识相结合，为两个小组的成员提供了对科学以及合作机构和国家文化的广泛视角。这种合作还提供了新的机会，科学推广和学生教育，包括：获得暑期学校在高场EPR，共振拉曼和MCD光谱和创建免费分发的基于网络的程序和教程的光谱和磁性数据的处理和拟合。大西洋两岸的研究人员通过美国的"扩大你的视野"方案和德国的"研究所女孩日"方案，参与让妇女参与科学。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.