Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, 43007 Tarragona (Spain).
Angew Chem Int Ed Engl. 2015 Dec 7;54(50):15289-93. doi: 10.1002/anie.201507356. Epub 2015 Oct 26.
First evidence for the existence of free trifluoromethyl anion CF3 (-) has been obtained. The 3D-caged potassium cation in K(crypt-222) is inaccessible to CF3 (-) , thus rendering it uncoordinated ("naked"). Ionic K(crypt-222) CF3 (-) has been characterized by single-crystal X-ray diffraction, solution NMR spectroscopy, DFT calculations, and reactivity toward electrophiles.
首次获得了游离三氟甲基阴离子 CF3(-) 存在的证据。[K(crypt-222)]+( )中的三维笼状钾阳离子对 CF3(-) 不可接近，因此未配位（“裸露”）。离子 [K(crypt-222)]+( )CF3(-) 已通过单晶 X 射线衍射、溶液 NMR 光谱、DFT 计算和对亲电试剂的反应性进行了表征。
