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Poly[tetra-aqua-(5-hy-droxy-pyridin-1-ium-3-carboxyl-ato-?O (3))tris-(?-oxalato-?(4) O (1),O (2):O (1'),O (2'))dieuropium(III)].

ABSTRACT: In the title compound, [Eu2(C6H5NO3)2(C2O4)3(H2O)4] n , the Eu(III) atom is bonded to one O atom from a monodentate 5-hy-droxy-pyridin-1-ium-3-carboxyl-ate ligand, six O atoms from three oxalate ligands and two water mol-ecules, exhibiting a highly distorted tricapped trigonal geometry. Three independent oxalate ligands, each lying on an inversion center, bridge the Eu(III) atoms, forming a brickwall-like layer parallel to (001), which is stabilized by intra-layer O-H?O hydrogen bonds. The layers are further linked through inter-layer O-H?O and N-H?O hydrogen bonds and ?-? inter-actions between the pyridine rings [centroid-centroid distance = 3.5741?(14)?Å] into a three-dimensional supra-molecular network.

SUBMITTER: Xu SS 

PROVIDER: S-EPMC3647824 | biostudies-other | 2013 May

REPOSITORIES: biostudies-other

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Poly[tetra-aqua-(5-hy-droxy-pyridin-1-ium-3-carboxyl-ato-κO (3))tris-(μ-oxalato-κ(4) O (1),O (2):O (1'),O (2'))dieuropium(III)].

Xu Shan-Shan SS   Mi Jun-Long JL   Chen Hong-Ji HJ  

Acta crystallographica. Section E, Structure reports online 20130427 Pt 5

In the title compound, [Eu2(C6H5NO3)2(C2O4)3(H2O)4] n , the Eu(III) atom is bonded to one O atom from a monodentate 5-hy-droxy-pyridin-1-ium-3-carboxyl-ate ligand, six O atoms from three oxalate ligands and two water mol-ecules, exhibiting a highly distorted tricapped trigonal geometry. Three independent oxalate ligands, each lying on an inversion center, bridge the Eu(III) atoms, forming a brickwall-like layer parallel to (001), which is stabilized by intra-layer O-H⋯O hydrogen bonds. The layer  ...[more]