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Sodium penta-potassium penta-nickel tetra-(diphosphate), NaK(5)Ni(5)(P(2)O(7))(4).

Moutataouia M, Lamire M, Saadi M, El Ammari L - Acta Crystallogr Sect E Struct Rep Online (2012)

Bottom Line: Adjacent chains are connected through apices to P(2)O(7) groups and to another [NiO(6)] or to a [KO(6)] octa-hedron.The resulting three-dimensional framework presents inter-secting tunnels running along the [010] and [001] directions in which the seven- and nine-coordinated potassium cations are located.The crystal structure of this new phosphate represents a new structural type.

View Article: PubMed Central - HTML - PubMed

ABSTRACT
The structure of the title compound, NaK(5)Ni(5)(P(2)O(7))(4), is characterized by the presence of two crystallographically independent P(2)O(7) groups with different conformations. The conformation of the first P(2)O(7) group is eclipsed, whereas that of the second is staggered. All atoms are in general positions except for two nickel and one potassium ions which lie on symmetry centers. Moreover, the structure exhibits disorder of the cationic sites with one general position fully occupied equally by Na(+) and Ni(2+) cations. This mixed site is surrounded by five O atoms forming a square-based pyramid. The crystal structure consists of edge-sharing [NiO(6)] octa-hedra forming infinite zigzag chains [Ni(3)O(14)] running parallel to [100]. Adjacent chains are connected through apices to P(2)O(7) groups and to another [NiO(6)] or to a [KO(6)] octa-hedron. The resulting three-dimensional framework presents inter-secting tunnels running along the [010] and [001] directions in which the seven- and nine-coordinated potassium cations are located. The crystal structure of this new phosphate represents a new structural type.

No MeSH data available.


Related in: MedlinePlus

Plot of NaK5Ni5(P2O7)4 crystal structure showing polyhedra linkage. Displacement ellipsoids are drawn at the 50% probability level. Symmetry codes:(i) -x, -y, -z; (ii) -x + 1, -y, -z; (iii) -x + 1, -y + 1, -z; (iv) x + 1, y + 1, z; (v) x, y + 1, z; (vi) -x + 1, -y + 1, -z + 1; (vii) -x, -y, -z + 1; (viii) -x + 1, -y, -z + 1; (ix) x + 1, y, z; (x) x - 1, y, z; (xi) x - 1, y - 1, z; (xii) x, y - 1, z.
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Fap1: Plot of NaK5Ni5(P2O7)4 crystal structure showing polyhedra linkage. Displacement ellipsoids are drawn at the 50% probability level. Symmetry codes:(i) -x, -y, -z; (ii) -x + 1, -y, -z; (iii) -x + 1, -y + 1, -z; (iv) x + 1, y + 1, z; (v) x, y + 1, z; (vi) -x + 1, -y + 1, -z + 1; (vii) -x, -y, -z + 1; (viii) -x + 1, -y, -z + 1; (ix) x + 1, y, z; (x) x - 1, y, z; (xi) x - 1, y - 1, z; (xii) x, y - 1, z.


Sodium penta-potassium penta-nickel tetra-(diphosphate), NaK(5)Ni(5)(P(2)O(7))(4).

Moutataouia M, Lamire M, Saadi M, El Ammari L - Acta Crystallogr Sect E Struct Rep Online (2012)

Plot of NaK5Ni5(P2O7)4 crystal structure showing polyhedra linkage. Displacement ellipsoids are drawn at the 50% probability level. Symmetry codes:(i) -x, -y, -z; (ii) -x + 1, -y, -z; (iii) -x + 1, -y + 1, -z; (iv) x + 1, y + 1, z; (v) x, y + 1, z; (vi) -x + 1, -y + 1, -z + 1; (vii) -x, -y, -z + 1; (viii) -x + 1, -y, -z + 1; (ix) x + 1, y, z; (x) x - 1, y, z; (xi) x - 1, y - 1, z; (xii) x, y - 1, z.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3379053&req=5

Fap1: Plot of NaK5Ni5(P2O7)4 crystal structure showing polyhedra linkage. Displacement ellipsoids are drawn at the 50% probability level. Symmetry codes:(i) -x, -y, -z; (ii) -x + 1, -y, -z; (iii) -x + 1, -y + 1, -z; (iv) x + 1, y + 1, z; (v) x, y + 1, z; (vi) -x + 1, -y + 1, -z + 1; (vii) -x, -y, -z + 1; (viii) -x + 1, -y, -z + 1; (ix) x + 1, y, z; (x) x - 1, y, z; (xi) x - 1, y - 1, z; (xii) x, y - 1, z.
Bottom Line: Adjacent chains are connected through apices to P(2)O(7) groups and to another [NiO(6)] or to a [KO(6)] octa-hedron.The resulting three-dimensional framework presents inter-secting tunnels running along the [010] and [001] directions in which the seven- and nine-coordinated potassium cations are located.The crystal structure of this new phosphate represents a new structural type.

View Article: PubMed Central - HTML - PubMed

ABSTRACT
The structure of the title compound, NaK(5)Ni(5)(P(2)O(7))(4), is characterized by the presence of two crystallographically independent P(2)O(7) groups with different conformations. The conformation of the first P(2)O(7) group is eclipsed, whereas that of the second is staggered. All atoms are in general positions except for two nickel and one potassium ions which lie on symmetry centers. Moreover, the structure exhibits disorder of the cationic sites with one general position fully occupied equally by Na(+) and Ni(2+) cations. This mixed site is surrounded by five O atoms forming a square-based pyramid. The crystal structure consists of edge-sharing [NiO(6)] octa-hedra forming infinite zigzag chains [Ni(3)O(14)] running parallel to [100]. Adjacent chains are connected through apices to P(2)O(7) groups and to another [NiO(6)] or to a [KO(6)] octa-hedron. The resulting three-dimensional framework presents inter-secting tunnels running along the [010] and [001] directions in which the seven- and nine-coordinated potassium cations are located. The crystal structure of this new phosphate represents a new structural type.

No MeSH data available.


Related in: MedlinePlus