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

该奖项由无机化学、生物无机化学和金属有机化学项目颁发，支持加州大学河滨分校的盖伊·伯特朗在合成和表征具有异常成键和电子态的硼-磷化合物方面的研究。这类化合物由一个四元环组成，其中硼和磷原子交替。通过在硼和磷原子上进行适当的取代，电子基态可以沿着从西格玛键合体系到单态或三态双自由基的连续体进行“调谐”。我们将研究这些不寻常的硼-磷分子的结构、成键和反应性。相关类别的化合物，如铝-磷或铝-氮体系也将被探索。这项研究将解决成键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与几所法国大学之间的合作研究和本科生、毕业生和博士后研究员的交流。

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.