Studies of Carbon-Sulfur Bond Cleavage by Homogeneous Transition Metal Complexes

均相过渡金属配合物碳硫键断裂的研究

• 批准号: 9816365
• 负责人: William Jones
• 金额: $ 33.78万
• 依托单位: University of Rochester
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-02-01 至 2002-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9816365&HistoricalAwards=false
• 关键词: Studies; Carbon; Sulfur; Bond; Cleavage

This award in the Inorganic, Bioinorganic, and Organometallic Chemistry Program supports research on carbon-sulfur bond cleavage in metal thiophene compounds by Dr. William D. Jones of the Chemistry Department, University of Rochester. The main goal is to understand the fundamental chemistry of the interaction of thiophenes and other sulfur-containing compounds with transition metal fragments and, in so doing, improve the effectiveness of HDS catalysts. The requirements and the detailed mechanism for cleavage of strong carbon-sulfur bonds will be investigated as well as the structural motifs for binding sulfur-containing organic compounds to metals. Particular attention will be paid to metal sulfhydryl and sulfido compounds, their interconversion, and lability. In addition, compounds containing tethered Cp-phosphine ligands with rhenium will be synthesized and their reactivity in HDS reactions investigated.Hydrodesulfurization (HDS) is a process of removing sulfur from fossil fuels using molybdenum catalysts, sometimes with a nickel promoter. Current technology is marginal in meeting environmental regulations and needs to be improved. This research will focus on understanding the role of nickel and other metals in breaking the C-S bond, the most problematic step in the HDS catalytic cycle.

该奖项在无机，生物无机和有机化学计划支持研究的碳硫键裂解金属噻吩化合物博士威廉D。罗切斯特大学化学系的琼斯。 主要目标是了解噻吩和其他含硫化合物与过渡金属片段相互作用的基本化学，并在此过程中提高HDS催化剂的有效性。 强碳-硫键断裂的要求和详细的机理将被研究，以及含硫有机化合物与金属结合的结构基序。 将特别注意金属巯基和硫化物化合物，它们的相互转化和不稳定性。 此外，还将合成含茂膦配体的化合物，并研究它们在加氢脱硫反应中的反应活性。加氢脱硫（HDS）是一种使用钼催化剂（有时使用镍促进剂）从化石燃料中脱除硫的方法。 目前的技术在满足环境法规方面处于边缘地位，需要加以改进。 这项研究将侧重于了解镍和其他金属在破坏C-S键中的作用，这是HDS催化循环中最有问题的步骤。