Reactions of Transition Metal Perfluoroalkyl and Perfluoroalkylidene Complexes

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该研究奖是无机、生物无机和有机化学项目的一项研究，旨在支持达特茅斯学院的Russell P. Hughes教授开展过渡金属的全氟烷基和全氟亚烷基化合物的化学基础研究。氟碳化合物是含有碳-氟（C-F）键的分子，在人类生活中发挥着重要作用：许多药物分子和农用化学品含有这些种类的化学键。由含氟化学品制成的新技术重要材料包括汽车软管和垫圈，重建手术材料和燃料电池膜。这些碳氟化合物的积极社会作用被其他有害的环境影响所抵消;大气中的挥发性氯氟烃（CFC）导致臭氧消耗和全球变暖，现在根据蒙特利尔议定书被禁止。替代分子不含对环境有害的氯原子，对于未来的制冷剂、气溶胶、发泡剂和半导体清洁溶剂等应用至关重要。该项目正在增加对过渡金属中心金属中心如何完成两个重要基本过程的理解：打破碳-氟键并产生新的碳-氢键，以产生新的环境友好分子;并正在产生碳氟化合物的转化方法和新反应，从而导致新的有机转化和新的技术上有用的材料。博士后，研究生和本科生，其中许多人继续先进的化学研究和就业的科学。各级学生都在接受书面和口头交流的教育，在指导他们的初级小组同事方面接受培训，并为参与学习提供丰富的机会，这增加了他们对化学的兴趣和知识。学生们正在接受培训，向广大受众传播科学概念，并在我们地区（克莱蒙和温莎）农村学校举办的少年科学咖啡馆中展示他们的研究及其社会意义，其中包括许多经济困难的学生。在推广活动中，我们农村地区的中学教师跟上这些和其他化学研究领域的新发展并认识到其实际和社会影响的能力，正在通过新罕布什尔州科学教师协会年会上的非正式和信息丰富的谈话来解决。这一基础研究将产生新的合成和催化方案，为技术上有用的分子提供节能途径，不会导致全球变暖和臭氧消耗等大气环境问题，从而为社会带来未来的好处。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). This Research award in the Inorganic, Bioinorganic andOrganometallic Chemistry program supports work by Professor Russell P. Hughes at Dartmouth College to carry out fundamental studies on the chemistry of perfluoroalkyl and perfluoroalkylidene compounds of transition metals.Fluorocarbons are molecules containing carbon-fluorine (C-F) bonds, and play significant roles in the lives of human beings: many pharmaceutical drug molecules and agrochemicals contain these kinds of chemical linkages. New technologically important materials made from fluorinated chemicals include automotive hoses and gaskets, materials for reconstructive surgery, and fuel cell membranes. Positive societal roles of these fluorocarbons are offset by deleterious environmental effects of others; volatile chlorofluorocarbons (CFCs) in the atmosphere have contributed to ozone depletion and global warming, and are now banned under the Montreal Protocol. Replacement molecules, which contain no environmentally harmful chlorine atoms, are crucially important for future applications as refrigerants, aerosols, foaming agents, and semiconductor cleaning solvents. This project is increasing understanding of how transition metal centers metal centers accomplish two important fundamental processes: breaking carbon-fluorine bonds coupled with making new carbon-hydrogen bonds to give new environmentally benign molecules; and is generating transformational methodology and new reactions of fluorocarbons that are leading to new organic transformations and new technologically useful materials.Broad human impact of this project continues in training of postdoctoral, graduate, and undergraduate students, many of whom are continuing to advanced chemistry studies and employment in science. Students at all levels are being educated in written and oral communication, trained in mentoring their junior group colleagues, and are being provided with rich opportunities for engaged learning, which is increasing their interest and knowledge in chemistry. Students are being trained in communicating scientific concepts to broad audiences, and are presenting their research and its societal relevance in Junior Science Cafes held in rural schools in our region (Claremont NH and Windsor VT) that include many economically disadvantaged students. In outreach activities, the capacity of secondary school teachers in our rural region to stay abreast of, and recognize the practical and societal impacts of, new developments in these and other chemistry research areas is being addressed by informal and informative talks at annual meetings of the New Hampshire Science Teachers Association. This basic research will have future benefits to society by generating new synthetic and catalytic schemes that will provide energy efficient routes to technologically useful molecules, which do not cause atmospheric environmental problems such as global warming and ozone depletion.