Synthesis and characterization of a new vanadium oxide, TMAV8 O20

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

doi:10.1039/a704624c

Cited by 40 publications

(28 citation statements)

References 13 publications

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“…However, a silver vanadium bronze with the predicted structure has not yet been found. A few years ago, Chirayil et al (1997) reported the ®rst vanadium oxide, TMAV 8 O 20 (TMA = tetramethylammonium), as being isostructural with the predicted structure of Ag x V 4 O 10 (x 2) with the large TMA cations located between the V 4 O 10 double layers. The vanadium oxide layers in TMAV 8 O 20 and -V 2 O 5 are thus also isotypic.…”

Section: Discussionmentioning

confidence: 99%

Structure of a high-pressure phase of vanadium pentoxide, β-V₂O₅

Филоненко¹,

Sundberg²,

Werner³

et al. 2004

Acta Crystallogr B Struct Sci

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A high-pressure phase of vanadium pentoxide, denoted beta-V2O5, has been prepared at P = 6.0 GPa and T = 1073 K. The crystal structure of beta-V2O5 has been studied by X-ray and neutron powder diffraction, and high-resolution transmission electron microscopy. The V atoms are six-coordinated within distorted VO6 octahedra. The structure is built up of quadruple units of edge-sharing VO6 octahedra linked by sharing edges along [010] and mutually connected by sharing corners along [001]. This arrangement forms layers of V4O10 composition in planes parallel to (100). The layers are mutually held together by weak forces. beta-V2O5 is metastable and transforms to alpha-V2O5 at 643-653 K under ambient pressure. Structural relationships between beta- and alpha-V2O5, and between beta-V2O5 and B-Ta2O5-type structures are discussed. The high-pressure beta-V2O5 layer structure can be considered as the parent of a new series of vanadium oxide bronzes with cations intercalated between the layers.

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Section: Discussionmentioning

confidence: 99%

Structure of a high-pressure phase of vanadium pentoxide, β-V₂O₅

Филоненко¹,

Sundberg²,

Werner³

et al. 2004

Acta Crystallogr B Struct Sci

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“…18c) Q chains are linked by sharing and corners with each other. This layer of two corners sharing Q chains was predicted by Rozier et al (1996) for Ag compounds and was found later by Chirayil et al (1997) in (tma)V 8 O 20 . The octahedra in the V 4 O 11 layer of one corner-sharing Q chain are distorted in the same manner as in the isolated chain of -SrV 2 O 6 .…”

Section: Q Structuresmentioning

confidence: 97%

“…(1) Rozier et al (1996); (2) Drozdov et al (1974); (3) Schnuriger et al (1991); (3a) Karpov et al (1989); (3b) Jordan & Calvo (1974); (4) Zandbergen et al (1994); (5) Galy & Lavaud (1971); (6) Chirayil et al (1997); (7) 1997). Substantial changes of the octahedron distortion are observed while Li is intercalated into this framework.…”

Section: Q Structuresmentioning

confidence: 99%

Structural chemistry of vanadium oxides with open frameworks

Zavalij

Whittingham

1999

Acta Crystallogr B Struct Sci

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325

267

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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.

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“…A number of vanadates and vanadium phosphates have been explored extensively as a result of their catalytic properties in organic oxidations and their intercalation properties (Centi, 1993;Cheetham et al, 1999;Chirayil et al, 1997;Ouellette et al, 2006;Sananes et al, 1995;Shan et al, 1999;Shi et al, 2000). In contrast, the known chemistry of vanadium selenites is very limited (Harrison et al, 1995;Halasyamini & O'Hare, 1997;Kim et al, 2001;Kwon et al, 1996;Lee et al, 1995;Vaughey et al, 1994).…”

Section: Commentmentioning

confidence: 99%

catena-Poly[[(2,2′-bipyridyl)oxidovanadium]-di-μ₂-oxido-[(2,2′-bipyridyl)oxidovanadium]-μ₃-selenito-bis[(2,2′-bipyridyl)dioxidovanadium]-μ₃-selenito]

et al. 2007

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In the title compound, [V(4)O(8)(SeO(3))(2)(C(10)H(8)N(2))(4)], there are two distinct vanadium coordination environments. Alternating corner-shared VO(4)N(2) octahedra and SeO(3) pyramids result in eight-membered centrosymmetric V(2)Se(2)O(4) rings. In addition, pairs of V centres form centrosymmetric V(2)O(6)N(4) clusters via edge-sharing. These two kinds of secondary building units are linked in an ABABAB fashion to give an infinite chain whose nature is unprecedented in Se-V-O systems.

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Synthesis and characterization of a new vanadium oxide, TMAV8 O20

Cited by 40 publications

References 13 publications

Structure of a high-pressure phase of vanadium pentoxide, β-V₂O₅

Structure of a high-pressure phase of vanadium pentoxide, β-V₂O₅

Structural chemistry of vanadium oxides with open frameworks

catena-Poly[[(2,2′-bipyridyl)oxidovanadium]-di-μ₂-oxido-[(2,2′-bipyridyl)oxidovanadium]-μ₃-selenito-bis[(2,2′-bipyridyl)dioxidovanadium]-μ₃-selenito]

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Synthesis and characterization of a new vanadium oxide, TMAV8 O20

Cited by 40 publications

References 13 publications

Structure of a high-pressure phase of vanadium pentoxide, β-V2O5

Structure of a high-pressure phase of vanadium pentoxide, β-V2O5

Structural chemistry of vanadium oxides with open frameworks

catena-Poly[[(2,2′-bipyridyl)oxidovanadium]-di-μ2-oxido-[(2,2′-bipyridyl)oxidovanadium]-μ3-selenito-bis[(2,2′-bipyridyl)dioxidovanadium]-μ3-selenito]

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Structure of a high-pressure phase of vanadium pentoxide, β-V₂O₅

Structure of a high-pressure phase of vanadium pentoxide, β-V₂O₅

catena-Poly[[(2,2′-bipyridyl)oxidovanadium]-di-μ₂-oxido-[(2,2′-bipyridyl)oxidovanadium]-μ₃-selenito-bis[(2,2′-bipyridyl)dioxidovanadium]-μ₃-selenito]