RUI: Advancing the Organometallic Chemistry of Octahedral Re6 Clusters Containing Alkynyl Ligands

在化学系化学合成计划的支持下，伊利诺伊州立大学的Lisa Szczepura教授将开发合成方法，用于制备和研究含有乙炔类配体的过渡金属簇合物。含有乙炔配体的相关单金属过渡金属物种在结构、反应活性和物理性质方面具有丰富的化学成分，这使得它们适合作为制备反应性催化剂的前驱体和制备延伸材料的构件。本项目的重点是相关的但相对未被探索的含有乙炔的多金属簇合物的合成和性质。将评估新合成的簇合物在催化应用和杂化材料制备方面的潜力。这项研究将与本科生和硕士研究生合作进行。此外，Szczepura博士将与校园内的各个单位合作，与科学界代表性较低的学生进行接触，目标是让他们参与拟议中的研究。根据这一奖项，Szczepura博士和她在伊利诺伊州立大学的团队将探索基于Re的团簇-乙炔化学的基本方面，以确定这些团簇核心的独特性质如何影响协调的乙炔配体的化学。这一建议的主要目标包括探索稀土基炔类化合物的化学以确定这些簇合物-碳相互作用的性质，开发通过C基桥将簇核连接在一起的合成方法，以及研究这些有机金属簇合物的电化学和光物理性质。这项工作的结果有可能提供对基于稀土的簇碳相互作用的性质的更深层次的理解。从拟议的目标中获得的结果将促进对有机金属六核八面体簇合物的基本理解，同时探索金属乙炔化学的新方面。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

With the support of the Chemical Synthesis program in the Division of Chemistry, Professor Lisa Szczepura of Illinois State University will develop synthetic methodologies for the preparation and study of transition metal cluster complexes containing acetylide-based ligands. The chemistry of the related monometallic transition metal species containing acetylide ligands is quite rich in terms of their structures, reactivity and physical properties making them desirable as precursors in the preparation of reactive catalysts and building blocks in the preparation of extended materials. This project focuses on the synthesis and properties of the related but relatively unexplored multimetallic cluster systems containing acetylides. The potential of the newly synthesized clusters in catalysis applications and in the preparation of hybrid materials will be assessed. This research will be conducted in collaboration with undergraduate and master’s level students. In addition, Dr. Szczepura will work with units across campus to engage with underrepresented students in science with the goal of involving them in the proposed studies. Under this award, Dr. Szczepura and her team at Illinois State University will explore fundamental aspects of rhenium-based cluster-acetylide chemistry to determine how the unique properties of these cluster cores impact the chemistry of the coordinated acetylide ligands. The main objectives of this proposal include an exploration into the chemistry of Re-based acetylides to determine the nature of these cluster-carbon interactions, the development of synthetic methodologies which link cluster cores together via C-based bridges, and investigations into the electrochemical and photophysical properties of these organometallic cluster complexes. Results from this work have the potential to provide a deeper understanding of the nature of Re-based cluster-carbon interactions. The results obtained from the proposed objectives will advance the fundamental understanding of organometallic hexanuclear octahedral clusters while exploring a new facet of metal acetylide chemistry.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.