Chemistry of Free Atoms and Reactive Clusters/Particles

自由原子和原子簇将被用作合成子和催化剂。有机和无机化学品将被允许与早期过渡金属原子和生成的中间体相互作用，以产生有用的有机金属试剂。选定的金属原子将被捕获在低温溶剂中，这些溶剂化的金属原子将被用来制备新的双金属分子簇和纳米级的金属和双金属粒子。这种颗粒的低温生长应该会产生从层状结构到均匀固溶体的不寻常的形态。将使用EXAFS、XPS、XRD、穆斯堡尔以及化学和催化探针反应进行表征。对溶剂化金属原子和团簇产生的薄膜也将进行类似的研究，目的是了解影响附着力的因素。还将尝试将这一方法扩展到介电材料。在化学系无机、生物无机和有机金属项目中，堪萨斯州立大学的肯尼斯·J·克拉本德博士将继续研究自由原子和原子团的化学。可以用这种方法制备的材料包括有用的有机金属试剂、双金属簇合物、薄膜和介电材料。这项研究的结果可能会对许多技术领域产生直接的影响，包括催化、电子学和陶瓷。

Free atoms and clusters of atoms will be used as synthons and catalysts. Organic and inorganic chemicals will be allowed to interact with early transition metal atoms and resultant intermediates trapped to yield useful organometallic reagents. Selected metal atoms will be trapped in low temperature solvents, and these solvated metal atoms will be used to prepare new bimetallic molecular clusters and nano-scale metal and bimetallic particles. The low temperature growth of such particles should yield unusual morphologies ranging from layered structures to homogeneous solid solutions. EXAFS, XPS, XRD, Mossbauer, and chemical and catalytic probe reactions will be used for characterization. Analogous studies of thin films produced from solvated metal atoms and clusters will be pursued also, with the goal of gaining knowledge about what affects adhesion. Extensions of this methodology to dielectric materials will also be attempted. %%% In this project in the Inorganic, Bioinorganic, and Organo- metallic Program of the Chemistry Division, Dr. Kenneth J. Klabunde of Kansas State University will continue studies of the chemistry of free atoms and clusters of atoms. Materials that can be prepared by this methodology include useful organo- metallic reagents, bimetalic clusters, thin films, and dielectric materials. The results of this research are potentially of direct interest to a number of fields of technology, including catalysis, electronics, and ceramics.