The resulting ∆G •, ‡ values show strong linear correlations (Pearson's correlation coefficient = -0.99) with the logarithm of the experimentally measured reaction rate constants for six MBH reactions catalysed by quinuclidine-based catalysts (Figure ). Therefore, this level of theory is used as a computationally accessible measurement of the catalytic potential of other tertiary amine-based catalysts for the MBH reaction.