Complexes polyaminopolycarboxylic ligands

Brittain HG, Choppin GR, Barthelemy P.P. pH-dependence of the metal ion hydration state in lanthanide complexes of polyaminopolycarboxylate ligands. J Coord Chem. 1992 26 143-153. 

This chapter will cover the synthetic, structural, and solution chemistry of rare earth complexes with carboxylic acids, polyaminopolycarboxylic acids, and amino acids, with an emphasis on their structural chemistry. As the carboxylate groups play the key roles in the metal-ligand coordination bonding in these complexes, we will start the chapter with the coordination chemistry of rare earth-carboxylic acid complexes, followed by rare earth-polyaminopolycarboxylic acid and rare earth-amino acid coordination chemistry. Owing to length limitations, an exhaustive citation of the large amount of research activities on the subjects is not possible. Instead, only selected examples are detailed to highlight the key features of this chemistry. 

Figure 9 The crystal structure of [Tb2(dbc)3-(H20)4] shown approximately down the crystallographic h-axis, where aqua ligands are found to point toward the center of the ID channels (Tb, black O, gray C, white H, omitted). (Reproduced with permission from from R. Wang and Z. Zheng, Rare Earth Complexes with Carboxylic Acids, Polyaminopolycarboxylic Acids and Amino Acids in Chun-Hui Huang, Rare Earth Coordination Chemistry Fundamentals and Applications, (c) John Wiley Sons (Asia) Pte Ltd, 2010.)...

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