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The 1H NMR spectra of A) 21 b‐Pb (300 K, CDCl3, 600 MHz), B) 21 b‐Cd (178 K, CD2Cl2, 500 MHz), C) 22 b‐Cd (300 K, CD2Cl2, 600 MHz), D) 22 b‐Cd (180 K, CD2Cl2, 600 MHz). The insets in traces A, B, and D contain part of the 1H‐19F HOESY spectra.
