Fluorinated Organometallic Complexes

氟化有机金属配合物

基本信息

批准号：
9905750
负责人：
Russell Hughes
金额：
$ 37万
依托单位：
Dartmouth College
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1999
资助国家：
美国
起止时间：
1999-07-01 至 2002-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9905750&HistoricalAwards=false
关键词：
Fluorinated Organometallic Complexes

项目摘要

Dr. Russell P. Hughes, Department of Chemistry, Dartmouth College, is supported by the Inorganic, Bioinorganic, and Organometallic Program of the Chemistry Division to investigate processes in which a transition metal activates carbon-fluorine bonds. The principal objectives of the study are to develop the syntheses of transition-metal fluoroalkyl complexes and use these complexes as reagents to functionalize fluorocarbon chains. Reactions will be developed for the destruction of fluorocarbons to CO and HF using common reagents such as hydrogen and water. Another process that converts C-F to C-H bonds at room temperature using hydrogen gas will be investigated as route to the mild conversion of hydrofluorocarbons. The details of how the metal center is capable of activating these normally unreactive C-F bonds will be probed and the extent of pi-backbonding from the metal to antibonding C-F group orbitals will be measured.Fluorinated organic molecules play important roles in our lives and the long term quality of our environment. Chlorofluorocarbons (CFC's) and perfluorocarbons (PFC's) are thought to be responsible for ozone depletion and global warming. Replacements for these substances are the environmentally friendly hydrofluorocarbons (HFC's). Thus, there is a need to devise efficient ways to recycle and destroy CFC's and PFC's, and to prepare HFC's. This study aims toward developing transition metal centers that can make and break bonds between carbon and fluorine. It will permit metal catalysts to be developed that perform efficient and precisely controlled chemical reactions on fluorocarbons.

达特茅斯学院化学系的罗素·休斯（Russell P. Hughes）博士得到了化学部的无机，生物无机和有机金属计划的支持，以调查过渡金属激活碳氟债券的过程。该研究的主要目标是开发过渡金属氟烷基复合物的合成，并将这些复合物用作试剂以使碳碳链功能化。将采用常见试剂（例如氢气和水）开发反应，以破坏氟化合物对CO和HF的反应。使用氢气在室温下将C-F转换为C-H键的另一个过程将作为通往氢氟化合物的轻度转化的途径。将探测金属中心如何激活这些通常不反应的C-F键的细节，以及将测量从金属到抗抗抗抗心型C-F组轨道的pi-backbond的程度。氟化有机分子在我们的生活中起着重要的作用，在我们的生活中起着重要作用。人们认为氯氟化合物（CFC）和全氟化合物（PFC）被认为是臭氧耗竭和全球变暖的原因。这些物质的替换是环保的氢氟化合物（HFC）。因此，有必要设计有效的方法来回收和破坏CFC和PFC的方法，并准备HFC。这项研究旨在开发可以在碳和氟之间建立和破坏键的过渡金属中心。它将允许开发金属催化剂，以对氟化合物进行有效且精确控制的化学反应。