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Structure and Dynamics of Lanthanide Complexes of Triethylenetetramine-N,N,N',N...

A multinuclear NMR study on [Ln(ttha)]3- and [Lnttha(NHR)2]- complexes (R=Et, CH2(CHOH)4CH2OH) shows that coordinating groups of the organic ligands in these complexes are occupying all coordination sites of the metal ions, leaving no space for coordination of H2O molecules (H6ttha=triethylenetetramine-N,N,Nprime,NPrime,Nprimeprimeprime,Nprimeprimeprime-hexaacetic acid). The lanthanides of the first half of the...