Synthesis and Studies of Selected Metal Carbonyl and Boron-Metal Carbonyl Clusters

该基金来自无机、生物无机和有机金属化学项目，研究领域为有机金属化学。该项目旨在扩展所选过渡金属羰基和硼金属羰基簇体系的化学性质，并进一步了解其性质。特别令人感兴趣的是这些表面上的金属团簇化合物的化学性质，它们作为有机化合物相互转化的催化剂和表面支撑金属团簇的模型，构成了另一类重要的非均相工业催化剂。该项目的合成努力旨在提供几种新的异核团簇材料，这些材料包含三角形或更高多面体的混合金属芯，或金属加上主要的族元素，如硼。将研究含有BCO或B3O3基团的三聚氨基羰基簇形成的化学过程，以深入了解它们及其一些衍生物形成的反应途径。一些这些混合金属和金属硼团簇的表面有机金属化学将在羟基化氧化镁上进行研究，并将尝试转化为杂原子金属团簇。原则上，对这类粒子的研究可以提供有趣的相关性和对高度分散的杂原子催化剂的基本理解，以及一种原子对另一种原子催化性能的影响。还将尝试在氧化物表面上建立一些簇的模型。

This grant from the Inorganic, Bioinorganic and Organometallic Chemistry Program is in the area of organometallic chemistry. The project is concerned with expanding the chemistry of and gaining further insights into the properties of selected transition metal carbonyl and boron metal carbonyl cluster systems. Of particular interest is the chemistry of these metal cluster compounds on surfaces, where they serve as catalysts for the interconversion of organic compounds and as models of surface-supported metal clusters, which constitute another important class of heterogeneous industrial catalysts. The synthetic effort of the project is designed to provide several new heteronuclear cluster materials which contain triangular or higher polyhedral cores of mixed metals, or metals plus a main group element such as boron. Chemistry of the formation of triosmiumnonacarbonyl clusters containing BCO or B3O3 groups will be studied to gain insights into the reaction pathways by which they and some of their derivatives are formed. The surface organometallic chemistry of a number of these mixed metal and metal boron clusters will be examined on hydroxylated magnesia and conversion to heteroatomic metal clusters will be attempted. In principle, a study of such particles can provide interesting correlations and basic understanding of highly dispersed heteroatomic catalysts and of the influence of one type of atom on the catalytic properties of the other. Some modelling of clusters on oxide surfaces will be attempted also.