¹⁸F-Labeled Silicon-Based Fluoride Acceptors: Potential Opportunities for Novel Positron Emitting Radiopharmaceuticals

Figure 2

Formation of a trigonal bipyramid siliconate anion intermediate leading to formation of [¹⁸F]5 from [¹⁹F]5 (gray = carbon; dark green = silicon; blue = fluorine-19; cyan = fluorine-18; white = hydrogen).