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The dehydrated copper silicate Na(2)[Cu(2)Si(4)O(11)]: a three-dimensional microporous framework with a linear Si-O-Si linkage.

Cunha-Silva L, Brandão P, Rocha J, Almeida Paz FA - Acta Crystallogr Sect E Struct Rep Online (2008)

Bottom Line: It exhibits an effective three-dimensional microporous framework with the major channels, in which the Na(+) cations are placed, running along the a-axis direction and smaller channels observed along the b-axis direction.The Cu centre is coordinated to five O atoms, exhibiting a slightly distorted square-pyramidal coordination geometry.The Na cation is interacting with five neighbouring O atoms, exhibiting an uncharacteristic coordination environment.

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Affiliation: Department of Chemistry, University of Aveiro, CICECO, 3810-193 Aveiro, Portugal.

ABSTRACT
The structure of the title dehydrated copper silicate, disodium dicopper undeca-oxide tetra-silicate, Na(2)(Cu(2)O(11)Si(4)), was determined by single-crystal X-ray diffraction from a non-merohedral twin. It exhibits an effective three-dimensional microporous framework with the major channels, in which the Na(+) cations are placed, running along the a-axis direction and smaller channels observed along the b-axis direction. The structure is unusual in that it contains a symmetry-constrained Si-O-Si angle of 180°. The Cu centre is coordinated to five O atoms, exhibiting a slightly distorted square-pyramidal coordination geometry. The Na cation is interacting with five neighbouring O atoms, exhibiting an uncharacteristic coordination environment.

No MeSH data available.


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Perspective views of the crystal packing arrangement along the (a) [100] and (b) [010] directions of unit cell.
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Fap3: Perspective views of the crystal packing arrangement along the (a) [100] and (b) [010] directions of unit cell.


The dehydrated copper silicate Na(2)[Cu(2)Si(4)O(11)]: a three-dimensional microporous framework with a linear Si-O-Si linkage.

Cunha-Silva L, Brandão P, Rocha J, Almeida Paz FA - Acta Crystallogr Sect E Struct Rep Online (2008)

Perspective views of the crystal packing arrangement along the (a) [100] and (b) [010] directions of unit cell.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2960335&req=5

Fap3: Perspective views of the crystal packing arrangement along the (a) [100] and (b) [010] directions of unit cell.
Bottom Line: It exhibits an effective three-dimensional microporous framework with the major channels, in which the Na(+) cations are placed, running along the a-axis direction and smaller channels observed along the b-axis direction.The Cu centre is coordinated to five O atoms, exhibiting a slightly distorted square-pyramidal coordination geometry.The Na cation is interacting with five neighbouring O atoms, exhibiting an uncharacteristic coordination environment.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Chemistry, University of Aveiro, CICECO, 3810-193 Aveiro, Portugal.

ABSTRACT
The structure of the title dehydrated copper silicate, disodium dicopper undeca-oxide tetra-silicate, Na(2)(Cu(2)O(11)Si(4)), was determined by single-crystal X-ray diffraction from a non-merohedral twin. It exhibits an effective three-dimensional microporous framework with the major channels, in which the Na(+) cations are placed, running along the a-axis direction and smaller channels observed along the b-axis direction. The structure is unusual in that it contains a symmetry-constrained Si-O-Si angle of 180°. The Cu centre is coordinated to five O atoms, exhibiting a slightly distorted square-pyramidal coordination geometry. The Na cation is interacting with five neighbouring O atoms, exhibiting an uncharacteristic coordination environment.

No MeSH data available.


Related in: MedlinePlus