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K(2)[Fe(II) (3)(P(2)O(7))(2)(H(2)O)(2)].

Yang J, Zhang X, Liu B, Sun W, Huang YX - Acta Crystallogr Sect E Struct Rep Online (2012)

Bottom Line: The [FeO(6)] octa-hedron shares its trans-edges with an adjacent [FeO(5)(H(2)O)] octahedron; in turn, the [FeO(5)(H(2)O)] octa-hedron shares skew-edges with a neighbouring [FeO(6)] octa-hedron and an [FeO(5)(H(2)O)] octa-hedron, resulting in a zigzag octa-hedral chain running along [001].The inter-layer space is occupied by K(+) cations, which adopt an eight-coordination to seven O atoms and one water mol-ecule from a neighbouring iron diphosphate layer.Thus, the K(+) ions not only compensate the negative charge of the layer but also link the layers into a network structure.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, Fujian Province, People's Republic of China.

ABSTRACT
The title compound, dipotassium diaqua-bis-(diphosphato)triferrate(II), K(2)[Fe(II) (3)(P(2)O(7))(2)(H(2)O)(2)], was synthesized under solvothermal conditions. The crystal structure is isotypic with its Co analogue. In the structure, there are two crystallographically distinct Fe positions; one lies on an inversion center, the other on a general position. The first Fe(2+) cation adopts a regular octa-hedral coordination with six O atoms, whereas the other is coordinated by five O atoms and a water mol-ecule. The [FeO(6)] octa-hedron shares its trans-edges with an adjacent [FeO(5)(H(2)O)] octahedron; in turn, the [FeO(5)(H(2)O)] octa-hedron shares skew-edges with a neighbouring [FeO(6)] octa-hedron and an [FeO(5)(H(2)O)] octa-hedron, resulting in a zigzag octa-hedral chain running along [001]. The zigzag chains are linked to each other by the P(2)O(7) diphosphate groups, leading to a corrugated iron diphosphate layer, [Fe(3)(P(2)O(7))(2)(H(2)O)(2)](2-), parallel to (100). The inter-layer space is occupied by K(+) cations, which adopt an eight-coordination to seven O atoms and one water mol-ecule from a neighbouring iron diphosphate layer. Thus, the K(+) ions not only compensate the negative charge of the layer but also link the layers into a network structure.

No MeSH data available.


Related in: MedlinePlus

Structural unit of K2[FeII3(P2O7)2(H2O)2], showing the coordination environments of Fe, K, and P atoms. Thermal ellipsoids were drawn at the 50% probability level. Symmetry codes: (i) x, –y+3/2, z+1/2; (ii) –x+2, –y+1, –z+1; (iii) –x+2,–y+2, –z+1; (iv) –x+2, y+1/2, –z+1/2; (v) x, –y+1/2, z+1/2; (vi) –x+2, y–1/2, –z+1/2; (vii) x, –y+1/2, z–1/2; (viii) –x+1, y+1/2, –z+1/2; (ix) x+1, y–1/2, –z+1/2; (x) –x+1, –y+1, –z+1; (xi) x, y–1, z; (xii) x, –y+3/2, z–1/2; (xiii) x, y+1, z.
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Fap1: Structural unit of K2[FeII3(P2O7)2(H2O)2], showing the coordination environments of Fe, K, and P atoms. Thermal ellipsoids were drawn at the 50% probability level. Symmetry codes: (i) x, –y+3/2, z+1/2; (ii) –x+2, –y+1, –z+1; (iii) –x+2,–y+2, –z+1; (iv) –x+2, y+1/2, –z+1/2; (v) x, –y+1/2, z+1/2; (vi) –x+2, y–1/2, –z+1/2; (vii) x, –y+1/2, z–1/2; (viii) –x+1, y+1/2, –z+1/2; (ix) x+1, y–1/2, –z+1/2; (x) –x+1, –y+1, –z+1; (xi) x, y–1, z; (xii) x, –y+3/2, z–1/2; (xiii) x, y+1, z.


K(2)[Fe(II) (3)(P(2)O(7))(2)(H(2)O)(2)].

Yang J, Zhang X, Liu B, Sun W, Huang YX - Acta Crystallogr Sect E Struct Rep Online (2012)

Structural unit of K2[FeII3(P2O7)2(H2O)2], showing the coordination environments of Fe, K, and P atoms. Thermal ellipsoids were drawn at the 50% probability level. Symmetry codes: (i) x, –y+3/2, z+1/2; (ii) –x+2, –y+1, –z+1; (iii) –x+2,–y+2, –z+1; (iv) –x+2, y+1/2, –z+1/2; (v) x, –y+1/2, z+1/2; (vi) –x+2, y–1/2, –z+1/2; (vii) x, –y+1/2, z–1/2; (viii) –x+1, y+1/2, –z+1/2; (ix) x+1, y–1/2, –z+1/2; (x) –x+1, –y+1, –z+1; (xi) x, y–1, z; (xii) x, –y+3/2, z–1/2; (xiii) x, y+1, z.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3379056&req=5

Fap1: Structural unit of K2[FeII3(P2O7)2(H2O)2], showing the coordination environments of Fe, K, and P atoms. Thermal ellipsoids were drawn at the 50% probability level. Symmetry codes: (i) x, –y+3/2, z+1/2; (ii) –x+2, –y+1, –z+1; (iii) –x+2,–y+2, –z+1; (iv) –x+2, y+1/2, –z+1/2; (v) x, –y+1/2, z+1/2; (vi) –x+2, y–1/2, –z+1/2; (vii) x, –y+1/2, z–1/2; (viii) –x+1, y+1/2, –z+1/2; (ix) x+1, y–1/2, –z+1/2; (x) –x+1, –y+1, –z+1; (xi) x, y–1, z; (xii) x, –y+3/2, z–1/2; (xiii) x, y+1, z.
Bottom Line: The [FeO(6)] octa-hedron shares its trans-edges with an adjacent [FeO(5)(H(2)O)] octahedron; in turn, the [FeO(5)(H(2)O)] octa-hedron shares skew-edges with a neighbouring [FeO(6)] octa-hedron and an [FeO(5)(H(2)O)] octa-hedron, resulting in a zigzag octa-hedral chain running along [001].The inter-layer space is occupied by K(+) cations, which adopt an eight-coordination to seven O atoms and one water mol-ecule from a neighbouring iron diphosphate layer.Thus, the K(+) ions not only compensate the negative charge of the layer but also link the layers into a network structure.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, Fujian Province, People's Republic of China.

ABSTRACT
The title compound, dipotassium diaqua-bis-(diphosphato)triferrate(II), K(2)[Fe(II) (3)(P(2)O(7))(2)(H(2)O)(2)], was synthesized under solvothermal conditions. The crystal structure is isotypic with its Co analogue. In the structure, there are two crystallographically distinct Fe positions; one lies on an inversion center, the other on a general position. The first Fe(2+) cation adopts a regular octa-hedral coordination with six O atoms, whereas the other is coordinated by five O atoms and a water mol-ecule. The [FeO(6)] octa-hedron shares its trans-edges with an adjacent [FeO(5)(H(2)O)] octahedron; in turn, the [FeO(5)(H(2)O)] octa-hedron shares skew-edges with a neighbouring [FeO(6)] octa-hedron and an [FeO(5)(H(2)O)] octa-hedron, resulting in a zigzag octa-hedral chain running along [001]. The zigzag chains are linked to each other by the P(2)O(7) diphosphate groups, leading to a corrugated iron diphosphate layer, [Fe(3)(P(2)O(7))(2)(H(2)O)(2)](2-), parallel to (100). The inter-layer space is occupied by K(+) cations, which adopt an eight-coordination to seven O atoms and one water mol-ecule from a neighbouring iron diphosphate layer. Thus, the K(+) ions not only compensate the negative charge of the layer but also link the layers into a network structure.

No MeSH data available.


Related in: MedlinePlus