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. Author manuscript; available in PMC: 2012 Sep 5.
Published in final edited form as: Inorg Chem. 2011 Aug 5;50(17):7966–7979. doi: 10.1021/ic2012843

Table 3.

Summary of the Kinetics of Formation of Gd3+ Chelates (I = 1.0 M KCl, 25 °C)

kH2O (s−1) kOH− (M−1 s−1)
DOTAa not detected 7.5 × 106
NB-DOTA (9.1 ± 1.1) × 10−5 (1.6 ± 0.8) × 106
S-SSS-1 (1.4 ± 0.2) × 10−4 (6.8 ± 0.4) × 103
S-RRRR-NB-DOTMA (−5.0 ± 0.8) × 10−5 (6.4 ± 0.3) × 104
a

Data published in ref 33 was re-examined according to eq 6.