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Two main species are formed when nitrilotriacetic acid (H 3 nta) displaces Cl - ligands from PtCl 42- . The resultant [Pt II (nta)Cl] 2- and [Pt(ntaH)Cl] - complexes were examined by 1 H and 13 C NMR methods. The 1:1 complex is responsive to changes in pH, indicating a titratable glycinato arm in [Pt I ...
Pt(II) complexes of N,N -ethylenediaminediacetate (edda) and N,N-ethylenediaminediacetate (uedda) have been prepared from K 2 PtCl 4 by stepwise addition of the nitrogen backbone donors at pH 2.9 (50-60 °C, 60 h) and further coordination of the deprotonated carboxylate donors at pH ≥4 (65-75 °C, 24 h). Coordination of the glycinato donors was shown by 1 H and 1 ...
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