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Plot of initial rate versus [LDA] in THF (12.2 M) for the ortholithiation of ArH (0.0050 M) in the presence of 0.020 M ArLi monitored with IR spectroscopy at −78 °C. The curve depicts an unweighted least-squares fit to y = a[LDA]n. [a = (7 ± 1) × 10–4, n = 1.80 ± 0.09].
