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Crystal structure of ammonium divanadium(IV,V) tellurium(IV) hepta-oxide.

Harrison WT, Johnston MG - Acta Crystallogr Sect E Struct Rep Online (2014)

Bottom Line: The polyhedral building blocks of the layered inorganic network in the mixed-valence title compound, (NH4)(V(IV)O2)(V(V)O2)(TeO3), are vertex-sharing V(V)O4 tetra-hedra, distorted V(IV)O6 octa-hedra and TeO3 pyramids, which are linked by V-O-V and V-O-Te bonds, forming double layers lying parallel to (100).The presumed Te(IV) lone-pairs of electrons appear to be directed inwards into cavities in the double layers.The charge-balancing ammonium cations lie between the layers and probably inter-act with them via N-H⋯O hydrogen bonds.

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Affiliation: Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland.

ABSTRACT
The polyhedral building blocks of the layered inorganic network in the mixed-valence title compound, (NH4)(V(IV)O2)(V(V)O2)(TeO3), are vertex-sharing V(V)O4 tetra-hedra, distorted V(IV)O6 octa-hedra and TeO3 pyramids, which are linked by V-O-V and V-O-Te bonds, forming double layers lying parallel to (100). The presumed Te(IV) lone-pairs of electrons appear to be directed inwards into cavities in the double layers. The charge-balancing ammonium cations lie between the layers and probably inter-act with them via N-H⋯O hydrogen bonds.

No MeSH data available.


Related in: MedlinePlus

View approximately down [001] of the crystal structure of (I) showing the (100) polyhedral layers inter­spersed by ammonium ions. Colour key: N atoms blue, other atoms as in Fig. 2 ▶.
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fig3: View approximately down [001] of the crystal structure of (I) showing the (100) polyhedral layers inter­spersed by ammonium ions. Colour key: N atoms blue, other atoms as in Fig. 2 ▶.

Mentions: The layers stack in the [100] direction, with the ammonium cations occupying the inter-layer regions (Fig. 3 ▶). Connectivity between the layers is presumably mediated by N—H⋯O hydrogen bonds, with N1 having eight O-atom neighbours within 3.4 Å (four in each layer). The N⋯O distances are listed in Table 2 ▶.


Crystal structure of ammonium divanadium(IV,V) tellurium(IV) hepta-oxide.

Harrison WT, Johnston MG - Acta Crystallogr Sect E Struct Rep Online (2014)

View approximately down [001] of the crystal structure of (I) showing the (100) polyhedral layers inter­spersed by ammonium ions. Colour key: N atoms blue, other atoms as in Fig. 2 ▶.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4120617&req=5

fig3: View approximately down [001] of the crystal structure of (I) showing the (100) polyhedral layers inter­spersed by ammonium ions. Colour key: N atoms blue, other atoms as in Fig. 2 ▶.
Mentions: The layers stack in the [100] direction, with the ammonium cations occupying the inter-layer regions (Fig. 3 ▶). Connectivity between the layers is presumably mediated by N—H⋯O hydrogen bonds, with N1 having eight O-atom neighbours within 3.4 Å (four in each layer). The N⋯O distances are listed in Table 2 ▶.

Bottom Line: The polyhedral building blocks of the layered inorganic network in the mixed-valence title compound, (NH4)(V(IV)O2)(V(V)O2)(TeO3), are vertex-sharing V(V)O4 tetra-hedra, distorted V(IV)O6 octa-hedra and TeO3 pyramids, which are linked by V-O-V and V-O-Te bonds, forming double layers lying parallel to (100).The presumed Te(IV) lone-pairs of electrons appear to be directed inwards into cavities in the double layers.The charge-balancing ammonium cations lie between the layers and probably inter-act with them via N-H⋯O hydrogen bonds.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland.

ABSTRACT
The polyhedral building blocks of the layered inorganic network in the mixed-valence title compound, (NH4)(V(IV)O2)(V(V)O2)(TeO3), are vertex-sharing V(V)O4 tetra-hedra, distorted V(IV)O6 octa-hedra and TeO3 pyramids, which are linked by V-O-V and V-O-Te bonds, forming double layers lying parallel to (100). The presumed Te(IV) lone-pairs of electrons appear to be directed inwards into cavities in the double layers. The charge-balancing ammonium cations lie between the layers and probably inter-act with them via N-H⋯O hydrogen bonds.

No MeSH data available.


Related in: MedlinePlus