Synthesis and Studies of Selected Clusters Derived from Metal Carbonyls Reacting With Lanthanide Metals and With Borane Reagents

9409123海岸俄亥俄州立大学谢尔登·肖尔博士，俄亥俄州立大学化学系，由无机化学、生物无机化学和金属有机化学计划支持，该计划的研究旨在扩大和发展制备和研究有机金属过渡金属簇合物的途径。硼烷与羰基或羰基金属簇合物的合成方法是通过硼烷与羰基金属簇合物的反应来合成的。碳酸盐阴离子将用硼烷进一步还原，希望得到具有多个亚甲基桥的物种，并将探索与一氧化碳和氢的反应。用稀土金属还原Ru和O3+生成梯形聚合物，其中稀土元素/过渡金属链通过羰基键连接。随着合成策略的发展，这项工作将扩展到各种过渡金属和替代桥基，如氰化物。这些梯形聚合物将被负载在羟基氧化镁上，并转化为双金属纳米颗粒，用作催化剂和研究表面反应。含有金属的小颗粒在催化和电子设备的各个领域都有应用。该项目旨在制备由过渡金属(如Ru或Om)和硼原子或更广泛的过渡金属和稀土金属片状阵列组成的小型“团簇”。这些物质将被转化为“纳米颗粒”，并对其化学和催化性能进行表征和评估。

9409123 Shore Ohio State Univ. Dr. Sheldon Shore, Chemistry Department, Ohio State University, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program for research designed to expand and develop avenues for the preparation and study of organometallic transition metal cluster systems. Compounds derived from ruthenium and osmium carbonyl clusters in which a boron is either incorporated at a cluster vertex or encapsulated within the metal core will be synthesized by reactions of borane with carbonyl or carbonylate metal clusters. The carbonylate anions will be further reduced with borane in hopes of obtaining species with multiple methylene bridges and reactions with carbon monoxide and hydrogen will be explored. The reduction of the ruthenium and osmium carbonyls with lanthanide metals will be used to prepare ladder polymers in which lanthanide/transition metal chains are joined by carbonyl linkages. With the development of the synthetic strategy, this work will be extended to a variety of transition metals and to alternative bridging groups such as cyanide. These ladder polymers will be loaded on hydroxylated magnesia and converted into bimetallic nanoparticles for use as catalysts and for studies of surface reactions. Small metal containing particles are finding application in various areas of catalysis and as electronic devices. This project is aimed at preparing small "clusters" which are composed of a transition metal, such as ruthenium or osmium, and a boron atom or a more extended, sheet-like array of transition and lanthanide metals. These will be converted into "nanoparticles" which will be characterized and evaluated for their chemical and catalytic properties.