Pyridyl-based pentadentate ligands: base-catalyzed hydrolysis of asym -[Co(dmptacn)Cl] 2+
The [Co(dmptacn)Cl]2+ (dmptacn = 1,4-bis(pyridylmethyl)-1,4,7- triazacyclononane) complex has been shown to be the asym isomer through 1D and 2D NMR studies, its optical resolution, and the single-crystal X-ray structure of its perchlorate salt. The kinetics of base-catalyzed hydrolysis establishes the usual [OH-] dependence (KOH = 0.040 M-1 s-1, 25 °C, / = 1.0 M, NaCl), but D-exchange experiments reveal that substantial if not complete reaction proceeds via the new pseudoaminate mechanism,...[Show more]
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