Pentadienyl ligands for the stabilization of unusual oxidation states and as directing ligands in homogenous catalysis

用于稳定异常氧化态并作为均相催化中的定向配体的戊二烯基配体

• 批准号: 269249563
• 负责人: Professor Dr. Marc D. Walter
• 金额: --
• 依托单位: Institut für Anorganische und Analytische Chemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/269249563?language=en
• 关键词: Pentadienyl; ligands; stabilization; unusual; oxidation

Pentadienyl (Pdl)- ligands are excellent δ-acceptors and therefore well-suited for the stabilization of metal complexes in low oxidation states. This property will be used to prepare chiral and achiral pentadienyl complexes of the early and late transition metals and the rare-earth metals. Besides investigations of the molecular species we also intend to explore the potential of these molecular compounds in “surface organometallic chemistry” (SOMC). In the next step the grafted materials and molecular model complexes will be probed for their synthetic and catalytic potential e.g. towards insertion reactions and the activation and functionalization of small molecules (such as CO, CO2, P4, N2O, N2, CH-bonds). We have already established that Pdl-ligands may also act as di- and trianionic ligand systems, which are formed when attempts were made to access group 4 metal and lanthanide complexes in unusual oxidation states. With respect to these observations we seek a more detailed understanding on the underlying reaction mechanism, but also to probe the reactivity of these species towards small molecules. Major emphasis of our research program is the exploration of the structure-reactivity relationship and the results derived from these studies will guide the potential application of these systems in catalysis and material synthesis.

戊二烯基（Pdl）-配体是优良的δ-受体，因此非常适合于稳定处于低氧化态的金属络合物。这一性质将用于制备前、后过渡金属和稀土金属的手性和非手性双金属配合物。除了研究这些分子物种外，我们还打算探索这些分子化合物在“表面有机金属化学”（SOMC）中的潜力。在下一步中，将探测接枝材料和分子模型复合物的合成和催化潜力，例如，对插入反应和小分子（如CO，CO2，P4，N2 O，N2，CH-键）的活化和官能化。我们已经确定，Pdl-配体也可以充当二阴离子和三阴离子配体系统，当试图获得不寻常的氧化态的第4族金属和镧系元素络合物时，形成所述二阴离子和三阴离子配体系统。关于这些观察结果，我们寻求对潜在反应机制的更详细的理解，同时也探索这些物质对小分子的反应性。我们的研究计划的主要重点是结构-反应性关系的探索，从这些研究中得出的结果将指导这些系统在催化和材料合成中的潜在应用。