Table 2. Activation parameters for the decay of DTC salts in aqueous solution (this work unless noted).

Compound	pH	T (°C)	k obs (s–1)	ΔH ‡ (kJ mol–1)	ΔS ‡ (J mol–1 K–1)
K[ImDTC]	7.55 a	37.4	1.05	44.8 ± 1	–101 ± 4
K[DIDTC]	2.0 b	37.1	0.37	49.4 ± 1	–95 ± 4
K[DIDTC]	7.4 b	37.0	0.0040	62.1 ± 1	–91 ± 3
K[DIDTC]	7.4 c	37.5	0.0020	62.8 ± 1	–95 ± 3
K[MorDTC]	7.4 b	37.0	4.3 × 10–5	d	d
Na[MorDTC]	5.92 e	35	3.6 × 10–4	66.1 ± 1	–97 ± 4

^aPhosphate buffer solution (75 mM), μ = 170 mM.

^bPhosphate buffer solution (50 mM), μ = 154 mM (NaCl).

^cMOPS buffer solution (50 mM), μ = 154 mM (NaCl).

^dNot measured.

^e Ref. 37, acetate buffer, μ = 1.0.