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Structure and Dynamics of Lanthanide Complexes of Triethylenetetramine-N,N,N',N...
Zitha-Bovens, Emrin; Muller, Robert N.; Laurent, Sophie; Vander Elst, Luce; Geraldes, Carlos F. G. C.; van Bekkum, Herman; Peters, Joop A.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...
Interactions Between Cyclodextrins and TmIII Chelates of Polyazamacrocycles as ...
Zitha-Bovens, Emrin; Bekkum, Herman van; Peters, Joop A.; Geraldes, Carlos F. G. C.The interactions between α-, β-, and γ-CD and the TmIII chelates of the macrocyclic polyaminopolycarboxylates DOTA and NOTA were studied with the use of 1H- and 13C-NMR shift and relaxation rate measurements. Interactions were only observed between Tm(DOTA)- and γ-CD. The structure and the stability of the concerning supramolecular structures was elucidated by fitting of the NMR titration curves to a theoretica...
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