Table 2.

Rate and equilibrium constants for the aquation and ligation of 1,1/t,t, 1,1/c,c and 1,0,1/t,t,t in 15 mM acetate, phosphate and sulfate according to the kinetic model shown in Scheme 1.

compound	anion (L)	kH (10−5s−1)	k-H(M−1s−1)	kL (M−1s−1)	k-L (10−5s−1)	pK1	pK2
1,1/t,t[a]	OAc−	1.83 ± 0.03	0.262 ± 0.009	0.0086 ± 0.0001	0.56 ± 0.02	4.16 ± 0.02	−3.19 ± 0.02
1,1/c,c[b]	PO43−	2.49 ± 0.04	0.40 ± 0.01	0.0086 ± 0.0002	3.9 ± 0.1	4.21 ± 0.02	−2.34 ± 0.02
	SO42−	3.85 ± 0.05	0.229 ± 0.04	0.025 ± 0.004	70 ± 10	3.77 ± 0.01	−1.6 ± 0.1
	OAc−	1.56 ± 0.02	0.134 ± 0.005	0.0066 ± 0.0001	0.38 ± 0.01	3.93 ± 0.02	−3.24 ± 0.02
	PO43−	2.18 ± 0.03	0.145 ± 0.005	0.0071 ± 0.0001	0.70 ± 0.02	3.82 ± 0.02	−3.01 ± 0.02
1,0,1/t,t,t[c]	PO43−	3.4 ± 0.1	0.275 ± 0.009	0.0166 ± 0.0002	5.4 ± 0.1	3.73 ± 0.02	−2.51 ± 0.01
	SO42−	3.43 ± 0.01	0.1324 ± 0.0007	0.0131 ± 0.0006	41 ± 2	3.587 ± 0.003	−1.50 ± 0.03

^[a]Data from Ref. [34, 35].

^[b]Data from Ref. [34].

^[c]Data from Ref. [32, 36].