Stable Localized 1,3-Diradicals Based on Boron and Heavier Main Group Elements

该奖项由无机、生物无机和有机金属化学项目颁发，支持加州大学河滨分校的Guy Bertrand对具有不寻常键和电子态的硼磷化合物的合成和表征的研究。这类化合物由硼和磷原子交替形成的四元环组成。通过对硼和磷原子进行明智的取代，电子基态可以沿着从sigma键系统到单重态或三重态双自由基的连续统“调谐”。这些不寻常的硼磷分子的结构、键和反应性将被研究。相关类别的化合物，如铝-磷或铝-氮系统也将被探索。本研究将讨论键合和电子结构的基本问题。可能的长期应用包括具有独特磁性的聚合物。这项研究还将促进加州大学河滨分校和几所法国大学之间的合作研究和本科生、研究生和博士后的交流。

This award by the Inorganic, Bioinorganic and Organometallic Chemistry program supports research by Guy Bertrand, University of California at Riverside, on the synthesis and characterization of boron-phosphorus compounds with unusual bonding and electronic states. This class of compounds consist of a four-membered ring with alternating boron and phosphorus atoms. By judicious substitution on the boron and phosphorus atoms, the electronic ground state can be "tuned" along a continuum from a sigma-bonded system to singlet or triplet diradicals. The structure, bonding and reactivity of these unusual boron-phosphorus molecules will be studied. Related classes of compounds such as aluminum-phosphorus or aluminum-nitrogen systems will also be explored. Fundamental questions of bonding and electronic structure will be addresssed by this study. Possible long-term applications include polymers with unique magnetic properties. This research will also promote collaborative research and the exchange of undergraduates, graduates and postdoctoral fellows between UC Riverside and several French universities.