Soluble Transition-Metal Chalcogenides

这项研究很重要，因为许多技术 过渡金属硫属化物的应用， 材料、电池材料和加氢处理催化剂。 计划研究可溶性过渡的某些方面- 金属硫族化物（S、Se、Te的化合物）， 开发一种与固态化学互补的化学， 努力 特别是，建议集中精力及早 过渡金属硒化物和碲化物。合成策略 对于Nb和Ta的情况，这些未知离子包括固态的 反应;这些反应可适用于合成 相应的碲化物。 要研究的反应化学 包括酸化，加热，以及与简单的 硫族元素以及无机和有机硫族元素。 使用 硒-77核磁共振技术的表征硒化物在 用于物种表征的溶液和衍射方法 从溶液中分离出来。 由以下制备的化合物： 溶液将提供有趣的化学和结构对比， 这些化合物是通过高温固态 反应.

The research is important because of the many technological applications of transition-metal chalcogenides such as superconducting materials, battery materials and hydroprocessing catalysts. It is planned to investigate certain aspects of soluble transition- metal chalcogenides (compounds of S, Se, Te) with a view toward developing a chemistry that is complementary to the solid-state efforts. In particular, it is proposed to concentrate on early transition metal selenides and tellurides. Synthetic strategies for these unknown ions include, for the case of Nb and Ta, solid-state reactions; these reactions may be applicable to the synthesis of the corresponding tellurides. The reaction chemistry to be studied includes acidification, heating, and interactions with simple chalcogens as well as with inorganic and organic chalcogens. The use of Se-77 NMR techniques for characterization of the selenides in solution and diffraction methods for the characterization of species isolated from solution is proposed. The compounds prepared from solution will provide interesting chemical and structural contrasts to those compounds that have been prepared by high-temperature solid-state reactions.