CAREER: New Vistas in Early-Transition Metal Complexes Containing Metal-Ligand Multiple Bonds

无机化学、生物无机化学和金属有机化学项目的这一职业奖支持印第安纳大学的Daniel J.Mindiola教授探索具有金属-配体多键的三配位和四配位钛配合物的化学。本研究涉及四配位钛(IV)亚烷基、亚胺和亚膦配合物的合成、结构、反应活性和动力学研究。讨论的主题包括亚烷基钛、亚胺和亚膦体系的成键考虑以及机理和反应性研究。研究延伸到第5族络合物和源于含有金属-配体多键的钒络合物的氧化还原研究。该项目的具体目标是：i)制备含金属-配体多键的低配位、高氧化态的早过渡金属配合物。Ii)探索这些独特体系的反应性，并将催化活性与成熟的体系进行比较。三)将这一合成方法扩展到制备低配位的第3族和第5族过渡金属。4)通过追溯分析概念图和自我评估技术，招收基础科学方向的本科生。五)在印第安纳大学实施两个以学生为基础的分会，以招募少数群体进入自然科学。这项工作旨在通过探索具有多个键的新的过渡金属配合物来开发新的催化剂。教育计划是培养本科生的研究意识，并为招收本科生(特别是来自代表性不足的群体)而实施以学生为基础的分会，以进入自然科学。

This CAREER award in the Inorganic, Bioinorganic and Organometallic Chemistry program supports work by Professor Daniel J. Mindiola at Indiana University to explore the chemistry of three- and four-coordinate titanium complexes having metal-ligand multiple bonds. The research involves the synthesis, structure, reactivity, and kinetic studies of a four-coordinate titanium(IV) alkylidene, imide, and phosphinidene complexes. Topics addressed include bonding considerations and mechanistic and reactivity studies of titanium alkylidene, imide, and phosphinidene systems. Investigations extend to group 5 complexes and redox studies stemming from vanadium complexes containing metal-ligand multiple bonds. Specific targets of the project are to: i) Prepare low-coordinate and high-oxidation state early-transition metal complexes containing metal-ligand multiple bonds. ii) Explore the reactivity of these unique systems and compare catalytic activity with well-established systems. iii) Expand this synthetic methodology to the preparation of low-coordinate group 3 and 5 transition metals. iv) Through retro-analytical concept mapping and self-assessment techniques, recruit undergraduate students in basic science-oriented research. v) Implement two student-based chapters at Indiana University for the recruitment of minority groups into the physical sciences. This work aims toward new catalysts by exploring new transition metal complexes with multiple bonds. The education plan is to develop undergraduate research awareness and implementation of student-based chapters for the recruitment of undergraduates (especially from underrepresented groups) into the physical sciences.