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. 2021 Jul 19;60(15):11530–11547. doi: 10.1021/acs.inorgchem.1c01550

Table 2. pCu2+ Values for the Cupric Complexes Formed by DO4S, DO3S, DO3SAm, DO2A2S, and Select State-of-the-Art 64/67Cu2+ Ligandsa.

  pCu2+
ligand pH 4.0 pH 6.0 pH 7.4
DO4S 9.3 11.3 17.7
DO3S 8.9 10.9 17.5
DO3SAm 8.5 10.5 17.2
DO2A2S 10.1 12.5 19.4
DOTA 7.6 9.8 17.4
NOTA 10.9 13.0 18.2
TETA 7.3 9.6 16.2
Cyc4Me 7.3 11.3 14.1
a

pCu2+ calculated at CCu2+ = 10–6 mol/L and CL = 10–5 mol/L using the constants of Tables 1 and S1 or taken from refs (44) and (48).