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Lanthanide Complexes of 2,2′,2″‐(10‐{[Hydroxy(phenyl)phosphoryl]methyl}‐1,4,7,10‐tetraazacyclododecan‐1,4,7‐triyl)triacetic Acid: Structural Characterisation of Intermediates from the Proposed Complexation Mechanism in the Systems of Ln III ‐dota‐Type Ligands
Author(s) -
Vojtíšek Pavel,
Rohovec Jan,
Klimentová Jana
Publication year - 2008
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200800418
Subject(s) - chemistry , lanthanide , isostructural , intramolecular force , dodecahedron , stereochemistry , ligand (biochemistry) , crystallography , crystal structure , solid state , ion , organic chemistry , receptor , biochemistry
The crystal and molecular structures of ten lanthanide complexes of H 4 do3aP Ph [2,2′,2″‐(10‐{[hydroxy(phenyl)phosphoryl]methyl}‐1,4,7,10‐tetraazacyclododecan‐1,4,7‐triyl)triacetic acid] are presented here. These complexes constitute a new type of coordination compounds within the Ln‐dota family. They represent an intermediate stage on the way from the ligand to the classical in‐cavity complexes. The important role of intramolecular H‐bonds for the process was observed. These intermediate complexes in the solid state form several isostructural groups with the different coordination polyhedra (square antiprisma or dodecahedron) of lanthanide ions. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)