Soluble Metal Selenides and Tellurides

James A. Ibers博士，西北大学化学系，由化学部无机、生物无机和有机金属项目支持，研究可溶性金属硒化物和碲化物。该项目的目的是发展金属硒和碲阴离子团簇的化学性质，这些物种已知与相应的金属硫化物明显不同。将设计各种合成技术，这些技术的基础是金属化合物与多硒化物或多碲化物在非水溶剂中的反应、硫族化物取代反应和碱金属在液态氨中还原金属硫族化物。这些化合物将通过硒和碲核磁共振和x射线衍射进行表征。硒和碲通常与少量其他金属结合在一起，被广泛用作半导体和其他先进材料的组件。本项目将为制备由几个硒或碲原子和一个或几个金属原子组成的物质开辟新的途径。这些“簇”将被设计成带有电荷，这将导致它们可溶于各种溶剂。因此，它们可以用于形成新的电子物质。

Dr. James A. Ibers, Department of Chemistry, Northwestern University, is supported by the Inorganic, Bioinorganic, and Organometallic Program of the Chemistry Division for research into soluble metal selenides and tellurides. The objective of the project is to develop the chemistry of metal-selenium and tellurium anionic clusters, species which are known to differ markedly from corresponding metal-sulfides. Varied synthetic techniques, which are based on the reactions of metal compounds with polyselenides or polytellurides in non-aqueous solvents, on chalcogenide substitution reactions, and on reduction of metal chalcogenides by alkali metals in liquid ammonia, will be designed. The compounds will be characterized by selenium and tellurium nmr and by x-ray diffraction. Selenium and tellurium, often combined with small amounts of other metals, are widely used as components in semiconductors and other advanced materials. In this project new routes will be developed for the preparation of substances composed of several selenium or tellurium atoms and one or a few metal atoms. These 'clusters' will be designed to bear an electrical charge, which will result in their being soluble in various solvents. As such they may find use in the formation of new electronic substances.