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Fundamental Studies of Fluorocarboranes and Nanoclassical Metal Carbonyls

氟碳硼烷和纳米经典金属羰基化合物的基础研究

基本信息

批准号：
9905482
负责人：
Steven Strauss
金额：
$ 36.8万
依托单位：
Colorado State University
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：
1999-08-15 至 2003-02-28
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9905482&HistoricalAwards=false
关键词：
Fundamental Studies Fluorocarboranes Nanoclassical Metal

项目摘要

This award in the Inorganic, Bioinorganic, and Organometallic Chemistry Program supports research on weakly coordinating anions and cationic metal carbonyls by Dr. Steven H. Strauss of the Chemistry Department, Colorado State University. Salts of reactive metal cations with polyfluorinated closo carborane weakly coordinating anions (WCAs) will be synthesized and characterized structurally, chemically, and spectroscopically. These weak counterions are stable under harsh chemical and thermal conditions, making them interesting species for use in synthesis of new polyelectrolyes, solid state catalysts, and aerogels. New cationic metal carbonyls with little or no pi backbonding will be synthesized, using WCAs as counterions. The goal of this part of the project is to understand the structure, bonding and chemical reactivity of these novel nonclassical metal carbonyls. Theoretical calculations will be used to help elucidate the experimental results.Negatively charged species, anions, are needed to balance the positive charge of cations. Here weakly coordinating anions are used to stabilize positive metal-containing ions while minimizing charge distortion. This makes it possible to characterize metal-carbonyl bonding in states that are important transients in many processes important in industry, such as gas purification, water-gas shift catalysis, and methanol synthesis catalysis.

该奖项在无机，生物无机和有机化学计划支持研究弱配位阴离子和阳离子金属羰基化合物博士史蒂芬H。科罗拉多州立大学化学系的施特劳斯。将合成反应性金属阳离子与多氟封闭碳硼烷弱配位阴离子（WCAs）的盐，并在结构、化学和光谱上进行表征。这些弱抗衡离子在苛刻的化学和热条件下是稳定的，使它们成为用于合成新的聚电解质、固态催化剂和气凝胶的令人感兴趣的物种。使用WCA作为抗衡离子，将合成具有很少或没有π背键的新的阳离子金属羰基化合物。这部分的目标是了解这些新型非经典羰基金属的结构、成键和化学反应性。理论计算将被用来帮助解释实验结果。负电荷的物种，阴离子，需要平衡阳离子的正电荷。在这里，弱配位阴离子用于稳定含正金属离子，同时使电荷畸变最小化。这使得有可能表征在工业中重要的许多过程（例如气体净化、水煤气变换催化和甲醇合成催化）中作为重要瞬态的状态中的金属-羰基键合。