Limits...
Poly[[dodeca-aqua-bis-(μ(3)-pyridine-2,6-dicarboxyl-ato)tetra-kis-(μ(2)-pyridine-2,6-dicarboxyl-ato)tri-calciumdieuropium(III)] 10.5-hydrate].

Shi F, Deng J, Dai H - Acta Crystallogr Sect E Struct Rep Online (2012)

Bottom Line: In the title compound, {[Ca(3)Eu(2)(C(7)H(3)NO(4))(6)(H(2)O)(12)]·10.5H(2)O}(n), the Eu(III) ion is nine-coordinated by three tridentate pyridine-2,6-dicarboxyl-ate (PDA) ligands, forming a [Eu(PDA)(3)](3-) building block.Two of the lattice water mol-ecules are disordered over two sets of sites with equal occupancy and one water mol-ecule is 0.25-occupied.Numerous O-H⋯O hydrogen bonds involving the water mol-ecules and carboxyl-ate O atoms are present.

View Article: PubMed Central - HTML - PubMed

Affiliation: Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, People's Republic of China.

ABSTRACT
In the title compound, {[Ca(3)Eu(2)(C(7)H(3)NO(4))(6)(H(2)O)(12)]·10.5H(2)O}(n), the Eu(III) ion is nine-coordinated by three tridentate pyridine-2,6-dicarboxyl-ate (PDA) ligands, forming a [Eu(PDA)(3)](3-) building block. The Ca(2+) ions adopt two types of coordination geometries. One Ca(2+) ion, lying on a twofold rotation axis, is eight-coordinated by four carboxyl-ate O atoms from four PDA ligands and four water mol-ecules, and the other two Ca(2+) ions, each lying on an inversion center, are six-coordinated by two carboxyl-ate O atoms from two PDA ligands and four water mol-ecules. The carboxyl-ate groups bridge the Eu(III) and Ca(2+) ions into a three-dimensional porous framework, with channels extending along [010] and [001] in which lattice water mol-ecules are located. Two of the lattice water mol-ecules are disordered over two sets of sites with equal occupancy and one water mol-ecule is 0.25-occupied. Numerous O-H⋯O hydrogen bonds involving the water mol-ecules and carboxyl-ate O atoms are present.

No MeSH data available.


Related in: MedlinePlus

The three-dimensional structure of the title compound viewed along the b axis. Lattice water molecules and H atoms are omitted for clarity.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC3344405&req=5

Fap2: The three-dimensional structure of the title compound viewed along the b axis. Lattice water molecules and H atoms are omitted for clarity.


Poly[[dodeca-aqua-bis-(μ(3)-pyridine-2,6-dicarboxyl-ato)tetra-kis-(μ(2)-pyridine-2,6-dicarboxyl-ato)tri-calciumdieuropium(III)] 10.5-hydrate].

Shi F, Deng J, Dai H - Acta Crystallogr Sect E Struct Rep Online (2012)

The three-dimensional structure of the title compound viewed along the b axis. Lattice water molecules and H atoms are omitted for clarity.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3344405&req=5

Fap2: The three-dimensional structure of the title compound viewed along the b axis. Lattice water molecules and H atoms are omitted for clarity.
Bottom Line: In the title compound, {[Ca(3)Eu(2)(C(7)H(3)NO(4))(6)(H(2)O)(12)]·10.5H(2)O}(n), the Eu(III) ion is nine-coordinated by three tridentate pyridine-2,6-dicarboxyl-ate (PDA) ligands, forming a [Eu(PDA)(3)](3-) building block.Two of the lattice water mol-ecules are disordered over two sets of sites with equal occupancy and one water mol-ecule is 0.25-occupied.Numerous O-H⋯O hydrogen bonds involving the water mol-ecules and carboxyl-ate O atoms are present.

View Article: PubMed Central - HTML - PubMed

Affiliation: Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, People's Republic of China.

ABSTRACT
In the title compound, {[Ca(3)Eu(2)(C(7)H(3)NO(4))(6)(H(2)O)(12)]·10.5H(2)O}(n), the Eu(III) ion is nine-coordinated by three tridentate pyridine-2,6-dicarboxyl-ate (PDA) ligands, forming a [Eu(PDA)(3)](3-) building block. The Ca(2+) ions adopt two types of coordination geometries. One Ca(2+) ion, lying on a twofold rotation axis, is eight-coordinated by four carboxyl-ate O atoms from four PDA ligands and four water mol-ecules, and the other two Ca(2+) ions, each lying on an inversion center, are six-coordinated by two carboxyl-ate O atoms from two PDA ligands and four water mol-ecules. The carboxyl-ate groups bridge the Eu(III) and Ca(2+) ions into a three-dimensional porous framework, with channels extending along [010] and [001] in which lattice water mol-ecules are located. Two of the lattice water mol-ecules are disordered over two sets of sites with equal occupancy and one water mol-ecule is 0.25-occupied. Numerous O-H⋯O hydrogen bonds involving the water mol-ecules and carboxyl-ate O atoms are present.

No MeSH data available.


Related in: MedlinePlus