Small Molecule Activation and Formation of Unusual Bonding Motifs with Low Coordinate, Low-Valent Rhenium B-Diketiminate Complexes

化学系的化学合成计划正在支持加州大学伯克利分校的约翰·阿诺德教授的研究。该项目旨在开发合成化合物的新方法。合成化学在我们的社会中扮演着至关重要的角色，为美国的国内生产总值做出了重大贡献。该项目的具体目标是发现含有Re的新化合物，Re是一种稀有的、相对未被勘探的金属。新的Re化合物形成了各种衍生品，表现出不同寻常的结构、反应性和磁性。新化合物的发现和对其性质的研究加强了对研究生和本科生的培训。参与该项目的学生经常为当地小学生组织科学外展课程，从而获得向所有年龄段的受众传播他们的知识的经验，同时向这些受众提供有益的经验。具体地说，阿诺德博士的学生与旧金山湾区学校科学家计划和奥克兰联合学区保持学生参与科学合作计划合作，为当地中小学生开发和实施频繁的化学演示，旨在吸引更年轻的学生，并教育他们基本的化学原理。这些课程在各种背景的年轻学生中促进了更广泛的科学知识，同时也鼓励了他们的好奇心和追求科学作为职业的倾向。化学家利用过渡金属参与不寻常的成键作用的能力来激活原本不反应的小分子，并促进有用的反应途径。金属离子及其相关的支持配体通过控制潜在键位周围的空间和电子环境来促进这些重要的过程。在这个项目中，在化学系化学合成计划的支持下，加州大学伯克利分校的John Arnold教授和他的研究小组专注于一种低配位、低价的Re-β-二酮基二亚胺配合物，旨在激活和降解硅藻类和有机分子中的强键。这些努力集成了合成、光谱和计算组件，有助于为广泛的工业相关化学过程提供信息，从增值化学品和材料的生产，到基于分子的电子设备的设计。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

The Chemical Synthesis Program in the Division of Chemistry is supporting the research of Professor John Arnold at the University of California, Berkeley. The project aims to develop new methods for the synthesis of chemical compounds. Synthetic chemistry plays a vital role in our society, providing a major contribution to the U.S. Gross Domestic Product. The specific aim of this project is discovery of new compounds that contain rhenium, a rare and relatively unexplored metal. The new rhenium compounds form a variety of derivatives that exhibit unusual structures, reactivity, and magnetism. The discovery of new chemical compounds and the study of their properties enhances the training provided to graduate and undergraduate students. The students involved in this project organize frequent science outreach lessons for local elementary school students, thus, gaining experience disseminating their knowledge to audiences of all ages, while simultaneously providing beneficial experiences to those audiences. Specifically, Dr. Arnold's students work in conjunction with both the Bay Area Scientists in Schools program and the Oakland Unified School District's Keeping Students Engaged in Science Collaborative to develop and implement frequent chemistry demonstrations for local elementary and middle school students that aim to engage younger students and educate them on basic chemical principles. These lessons promote broader scientific knowledge amongst younger students of all backgrounds while also encouraging their curiosity and an inclination to pursue science as a career. Chemists take advantage of the ability of transition metals to engage in unusual bonding interactions to activate otherwise unreactive small molecules and promote useful reactivity pathways. Metal ions and their associated supporting ligands facilitate these important processes by controlling the steric and electronic environment around potential bonding sites. In this project, with support from the Chemical Synthesis Program in the Division of Chemistry, Professor John Arnold and his research group at the University of California, Berkeley are focusing on a low coordinate, low-valent rhenium beta-diketiminate complexes, directed towards the activation and degradation of strong bonds in diatomics and organic molecules. These efforts, which integrate synthetic, spectroscopic, and computational components, help inform on a wide range of industrially relevant chemical processes, from the production of value-added chemicals and materials, to the design of molecular-based electronic devices.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.