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. Author manuscript; available in PMC: 2013 Mar 25.

Published in final edited form as: J Am Chem Soc. 2011 Mar 15;133(13):4865–4873. doi: 10.1021/ja1093919

Table 2.

Intermolecular rate constants and activation parameters.^a

	C112D	C112D/M121L

k₁₂ – 283 K, M⁻¹s⁻¹	80 (12,700)	9700 (24,800)
k₁₂ – 288 K, M⁻¹s ⁻¹	120 (17,700)	18100 (45,700)
k₁₂ - 293 K, M⁻¹s ⁻¹	170 (23,100)	23400 (58,200)
k₁₂ - 298 K, M⁻¹s ⁻¹	260 (32,400)	30800 (75,400)
k₁₂ - 303 K, M⁻¹s ⁻¹	460 (53,100)	41200 (99,400)
ΔH^‡ (kJ mol⁻¹)	58 ± 4	46 ± 5
ΔS^‡ (J mol⁻¹ K⁻¹)	−2 ± 13	−3 ± 15

^a

Reverse rate constants [Eq. (5)] are indicated in parentheses.