Dinuclear Reductive Elimination Reactions of Dimeric Platinum Complexes

二聚铂配合物的双核还原消除反应

• 批准号: 9101834
• 负责人: Gordon Anderson
• 金额: $ 13.5万
• 依托单位: University of Missouri-Saint Louis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-07-15 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9101834&HistoricalAwards=false
• 关键词: Dinuclear; Reductive; Elimination; Reactions; Dimeric

A series of dimeric platinum complexes containing bridging (diphenylphosphino)cyclopentadienyl (dppc) ligands will be prepared and characterized by NMR spectroscopy and X-ray diffraction. Dinuclear reductive elimination reactions will result in carbon-carbon bond formation, and the mechanism(s) of these processes will be investigated using isotopic labeling and variable temperature NMR techniques. The dppc-bridged platinum system will be developed in two ways. The first will be to introduce one or more methyl groups onto the cyclopenta- dienyl ring. This will enhance the coordinating ability of the ligand and prevent reversible dissociation of the cyclopenta- dienyl ring, which appears to be a feature of the dinuclear eliminations. Secondly, a bis(phosphino)cyclopentadienyl ligand will be prepared and used to construct homo- and hetero- metallic trimeric and oligomeric complexes. Where two different metals are present in a single complex, chemistry different from that found for either metal alone is expected. %%% In this project in the Inorganic, Bioinorganic, and Organo- metallic Program of the Chemistry Division, Dr. Gordon K. Anderson of the University of Missouri at Saint Louis will prepare dimeric platinum complexes for use as catalysts in carbon-carbon bond forming reactions. This type of reaction is involved in reforming processes and the production of fuels based on ethylene, methanol, or synthesis gas. In addition, complexes containing many metal atoms of different elements will be synthesized for the same purpose.

将制备一系列含有桥联（二苯基膦）环戊二烯基（dppc）配体的二聚铂配合物，并通过核磁共振波谱和 X 射线衍射进行表征。 双核还原消除反应将导致碳-碳键形成，这些过程的机制将使用同位素标记和变温核磁共振技术进行研究。 dppc桥接铂金系统将以两种方式开发。 第一种是将一个或多个甲基引入到环戊二烯基环上。 这将增强配体的配位能力并防止环戊二烯基环的可逆解离，这似乎是双核消除的特征。 其次，将制备双(膦基)环戊二烯基配体并用于构建同质和异质金属三聚和寡聚复合物。 当两种不同的金属存在于单一络合物中时，预期化学性质与单独使用任一金属所发现的化学性质不同。 %%% 在化学系无机、生物无机和有机金属项目的这个项目中，密苏里大学圣路易斯分校的 Gordon K. Anderson 博士将制备二聚铂络合物，用作碳-碳键形成反应的催化剂。 此类反应涉及重整过程以及基于乙烯、甲醇或合成气的燃料的生产。此外，出于相同的目的，还将合成含有许多不同元素的金属原子的络合物。