Synthetic, Structural and Reactivity Studies on Chalcogenide Complexes

周期表第七族的元素，包括氧， 硫、硒和碲被称为硫族元素。 这 研究项目涉及的合成和性能 金属硫属化物，特别是金属与硫的化合物。 等 化合物在生物和工业中起着重要的作用， 催化作用 金属硫化物构成了许多化合物的活性部位， 重要的酶，是工业上的活性成分， 重要的加氢脱硫催化剂。 该项目预计将 加强对这些重要催化剂的了解， 设计更高效的催化剂。 本项目的目标是从结构上综合 详细描述和探索特定金属的反应性， 硫络合物 这些复合体有望帮助我们 理解a）金属硫的结构和反应性 在工业上重要的加氢脱硫（HDS）中的活性中心 反应催化剂 B）特异性早期抗体的结构和反应性 过渡金属硫配合物和c）结构和 一类新的异质结M/Fe/S团簇的反应性。 研究 在第一个感兴趣的领域将把重点放在综合， 二元络合阴离子的结构和反应性， 钼和硫以及三元钼/硫/氧阴离子。 利用Mo/S（O）络合物可以得到异金属簇合物 阴离子作为二价过渡金属离子的配体。 的结构 新的M/Mo/S（O）配合物的反应性将在 详细 负载或未负载的Mo/S（O）和 M/Mo/S（O）配合物作为噻吩加氢脱硫催化剂， Zr/S、Nb/S和镧系元素/S络合物化学。 这些复合物 预计将显示出异常的反应性，并将作为 用于合成特定异金属簇合物的试剂。 最后，研究了Fe 6S 6L 6簇合物作为配体的能力。 配位不饱和有机金属片段，将被利用 用于用MFe 6S 6合成七金属和八金属簇合物 和M2 Fe 6S 6芯。 这些集群作为 将评价小分子的活化和还原。

The elements of Group Seven of the Periodic Table, including oxygen, sulfur, selenium and tellurium, are known as the chalcogens. This research project is concerned with the synthesis and properties of metal chalcogenides, especially compounds of metals with sulfur. Such compounds play important roles both in biological and industrial catalysis. Metal Sulfides constitute the active sites of a number of important enzymes and are the active ingredient in the industrially important hydrodesulfurization catalysts. This project is expected to enhance understanding of these important catalysts and lead to the design of more efficient catalysts. The goals of this project are to synthesize, structurally characterize and explore in detail the reactivities of specific metal- sulfur complexes. These complexes are expected to assist in our understanding of a) The structures and reactivity of the metal sulfur active sites in the industrially important hydrodesulfurization (HDS) reaction catalysts. b) The structures and reactivity of specific early transition metal sulfur complexes and c) The structures and reactivities of a new class of heteronuclear M/Fe/S clusters. Research in the first area of interest will place emphasis in the synthesis, structure and reactivity of the binary complex anions containing molybdenum and sulfur and ternary molybdenum/sulfur/oxygen anions. Heterometallic clusters will be obtained using the Mo/S(O)complex anions as ligands for divalent transition metal ions. The structures and reactivity of the new M/Mo/S(O) complexes will be studied in detail. The effectiveness of supported or unsupported Mo/S(O) and M/Mo/S(O) complexes as catalysts for the HDS of thiophene concerns the chemistry of Zr/S, Nb/S and Lanthanides/S complexes. These complexes are expected to display exceptional reactivity, and will serve as reagents for the synthesis of specific heterometallic clusters. Finally the ability of the Fe6S6L6 clusters to serve as ligands for coordinatively unsaturated organometallic fragments, will be utilized for the synthesis of hepta- and octametallic clusters with the MFe6S6 and M2Fe6S6 cores. The importance of these clusters as templates for the activation and reduction of small molecules will be evaluated.