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Plot of initial rate versus [LDA] in THF (12.2 M) for the ortholithiation of ArH (0.0050 M) measured with IR spectroscopy at −78 °C. The curve depicts an unweighted least-squares fit to y = a[LDA]n. [a = (3.5 ± 0.3) × 10–5, n = 1.12 ± 0.06].
