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

无机、生物无机和有机金属化学项目的CAREER奖支持印第安纳大学Daniel J. Mindiola教授对具有金属配体多键的三坐标和四坐标钛配合物的化学研究。研究了四配位钛（IV）烷基烯、亚胺和膦烯配合物的合成、结构、反应性和动力学研究。讨论的主题包括键的考虑和机制和反应性研究的钛烷基烯，亚胺，和膦烯系统。研究扩展到5族配合物和氧化还原研究源于含金属配体多键的钒配合物。该项目的具体目标是：1)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，并将催化活性与已建立的体系进行比较。iii)将这种合成方法扩展到制备低配位的3族和5族过渡金属。4)通过回溯分析概念图和自我评估技术，招收基础科学研究方向的本科生。v)在印第安纳大学设立两个以学生为基础的分会，招收少数族裔进入物理科学领域。这项工作旨在通过探索新的多键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，并实施以学生为基础的章节，以招募本科生（特别是来自代表性不足的群体）进入物理科学。

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.