Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA.
Angew Chem Int Ed Engl. 2017 Feb 6;56(7):1799-1804. doi: 10.1002/anie.201611009. Epub 2017 Jan 9.
Fluoride anion complexation impacts a number of areas ranging from sensing to nucleophilic fluorination chemistry. Described here is a new bidentate Lewis acid consisting of two stiborane units connected by a 1,8-triptycenediyl backbone. This neutral derivative captures fluoride with an unprecedented affinity for a neutral, water-compatible Lewis acid. Structural, spectroscopic and computational studies demonstrate that fluoride anion binding is assisted by the formation of a C-H⋅⋅⋅F hydrogen bond which involves a methine group of the 1,8-triptycenediyl backbone.
氟离子络合作用影响了许多领域，从传感到亲核氟化化学。这里描述的是一种新的双齿路易斯酸，由两个连接在 1,8-三芴基骨架上的二硼烷单元组成。这种中性衍生物与中性、水溶性路易斯酸具有前所未有的亲和力，可以捕获氟离子。结构、光谱和计算研究表明，氟离子的结合是通过形成 C-H···F 氢键来辅助的，该氢键涉及 1,8-三芴基骨架的亚甲基基团。
