Layered Tetramethylammonium Vanadium Oxide [N(CH3)4]V3O7by X-ray Rietveld Refinement

Zavalij, Peter Y.; Chirayil, Thomas; Whittingham, M. S.

doi:10.1107/s0108270197000474

Cited by 13 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…General stoichiometric formula of vanadium oxide frameworks for new materials with particular properties. The principles can be used to solve nonconventional crystal structures, such as (tma)V 3 O 7 (Zavalij et al, 1997a), which was solved from poor-quality X-ray powder data only after a review of the known vanadium oxide structures and possible vanadium coordination. Another example is the determination of the structure of (en 2 Ni)V 6 O 14 , for which an ordered model was obtained using a structural knowledge of the possible structures of V 6 O 14 layers.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Structural chemistry of vanadium oxides with open frameworks

Zavalij

Whittingham

1999

Acta Crystallogr Sect B

324

264

View full text Add to dashboard Cite

The present work is dedicated to a crystal-chemical and topographical analysis of vanadium oxides with open structures. The review covers, apart from a few exceptions, only pure vanadium oxide structures with vanadium in oxidation states greater than +3. Purely tetrahedral frameworks are not discussed because of their traditional, well known crystal chemistry and only a few examples of cluster compounds are provided. Structural classi®cation and notation of vanadium oxide frameworks are proposed based on the following scheme: polyhedra 3 chain 3 layer 3 three-dimensional framework. Thus, approximately 60 types of vanadium oxide frameworks are divided into ®ve classes by type of coordination polyhedra present and into 14 subclasses by a more complex structural formation. Details are also given of the analysis of vanadium± oxygen coordination polyhedra and their metamorphosis: tetrahedron±trigonal bipyramid±square pyramid±octahedron, as well as the combinatorial deduction of possible structures for the most common framework types.

show abstract

Section: Discussionmentioning

confidence: 99%

“…(1) Zavalij et al (1997a); (2) Nazar et al (1996); (3) Zhang et al (1996b); (4) Zhang, DeBord et al (1996); (5) Chen et al (1999); (6) Zavalij et al (1999). example of single-chain structures with the VO 3 composition.…”

Section: Q Structuresmentioning

confidence: 99%

Structural chemistry of vanadium oxides with open frameworks

Zavalij

Whittingham

1999

Acta Crystallogr Sect B

324

264

View full text Add to dashboard Cite

show abstract

“…The structure of next NH 4 V 3 O 7 polymorphic modification VIII could be the most related to the known tetramethylammonium vanadate N(CH 3 ) 4 V 3 O 7 [33], since the similarity in chemical nature. This phase has tetragonal type of lattice and consists of the layers of VO 4 tetrahedra and VO 5 pyramids.…”

Section: O 7 Polymorphsmentioning

confidence: 96%

Relative stability, electronic and structural properties in the family of NH4V3O7 polymorphs from first principles calculations

Popov

Захарова

Liu

et al. 2015

Computational and Theoretical Chemistry

View full text Add to dashboard Cite

“…There has been much work performed on vanadium oxide frameworks using the tetramethylammonium ion (tma) as a template which also often functions as the counter-ion. In layered vanadium oxides, such as tmaV 4 O 10 (Zavalij et al, 1996), tmaV 3 O 7 (Zavalij et al, 1997), tmaV 8 O 20 (Chirayil et al, 1997) and others, the tma ion also plays the role of a separator, which keeps the layers from collapsing and thus stabilizes the structure. This work presents the crystal structure of the novel title compound, (I), of tma and vanadium oxide, with the additional presence of sulfate groups as part of the framework.…”

Section: Commentmentioning

confidence: 99%