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(A) H2B=NMeH equivalents from H2 evolution (eudiometer) in the dehydropolymerization of H3B·NMeH2 (0.223 M 1,2-F2C6H4, 20 °C). Each set of comparative runs used the same batch of solvent and H3B·NMeH2. 5/6 (∼50:50) at various loadings + 0.05 μL of THF, inset = kobs versus [5/6]0.5. (B) Comparison of Mn and Đ versus [5/6], pure 6, 2a, 3a, and 4b (under H2-evolution measurement conditions).
