A lithiated m-terphenyl ligand bearing fluorine atoms at the ortho positions of the flanking aryl rings was synthesized and characterized using single crystal X-ray diffraction, variable-temperature multinuclear NMR spectroscopy, and computational methods. Changes in ¹J_C,F on coordination to lithium as a spectroscopic observable parametrizing the strength of the C–F···Li interaction are described, and a general, qualitative relationship between C–F bond lengths, Δ¹J_C,F values, and the extent of C–F bond activation as a result of Lewis acid coordination is proposed.

中文翻译：

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碳-氟键对路易斯酸配位的¹ J _C，F耦合的扰动：结构，光谱和计算研究。

锂化米在侧翼芳基环的邻位-三联苯配体轴承的氟原子被合成，并使用单晶X射线衍射，变温多核NMR光谱法，和计算方法，其特征在于。在变化¹ Ĵ _C，F上的协调，以锂作为分光观察到的参数化的C-F···栗相互作用的强度被描述，和C-F键长之间Δ一般，定性关系，¹ Ĵ _C，F值，以及路易斯酸配位作用导致CF键活化的程度。