A Mixed-Valent Vanadium Monophosphate with a Chain-Like Structure: Ba3V2O3(PO4)3

Borel, M.M.; Leclaire, A.; Chardon, J.; Michel, C.; Provost, J.; Raveau, B.

doi:10.1006/jssc.1997.7641

Cited by 9 publications

(6 citation statements)

References 11 publications

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“…[1][2][3][4] The rich structural chemistry can be attributed to the different building blocks, i.e., metal oxide octahedra and phosphate tetrahedra, observed in the materials. The diverse coordination geometry results in the formation of a wide variety of structural topologies, e.g., one-dimensional chains, 5,6 twodimensional layers, [7][8][9] and three-dimensional frameworks. [10][11][12] Moreover, the various compounds exhibit very interesting materials properties such as electric, [13][14][15] magnetic, 16,17 catalytic, 17 and second-harmonic generating properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structure, and Characterization of Two New Layered Mixed-Metal Phosphates, BaTeMO₄(PO₄) (M = Nb⁵⁺ or Ta⁵⁺)

Orzechowski

Halasyamani

2003

Inorg. Chem.

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Two new isostructural mixed-metal phosphates, BaTeMO(4)(PO(4)) (M = Nb(5+) or Ta(5+)), have been synthesized as bulk phase powders and single crystals by standard solid-state techniques using BaCO(3), TeO(2), Nb(2)O(5) (or Ta(2)O(5)), and NH(4)H(2)PO(4) as reagents. The materials have novel layered crystal structures consisting of [M(5+)O(6/2)](-) corner-sharing octahedral chains that are connected to [Te(4+)O(4/2)](0) polyhedra and [P(5+)O(2/1)O(2/2)](-) tetrahedra. The Ba(2+) cations reside between the layers and maintain charge balance. The Te(4+) cations are in asymmetric coordination environments attributable to their lone pairs. The Nb(5+) distorts along the local C(4) direction of its octahedron resulting in a "short-long-short-long" Nb-O-Nb bond motif. The Nb(5+) cation displaces away from the oxide ligands that are bonded to Te(4+) or P(5+) cations, attributable to the structural rigidity of the TeO(4) and PO(4) polyhedra. Thus, the TeO(4) and PO(4) polyhedra support and reinforce the intraoctahedral distortion observed within the NbO(6) octahedra. Infrared and Raman spectroscopy, thermogravimetric analysis, and ion-exchange experiments are also presented. Crystal data: BaTeNbO(4)(PO(4)), orthorhombic, space group Pbca (No. 61), with a = 6.7351(9) A, b = 7.5540(10) A, c = 27.455(4) A, V = 1396.8(3) A(3), and Z = 8; BaTeTaO(4)(PO(4)), orthorhombic, space group Pbca (No. 61), with a = 6.734(2) A, b = 7.565(3) A, c = 27.435(9) A, V = 1372.6(8) A(3), and Z = 8.

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Section: Introductionmentioning

confidence: 99%

Synthesis, Structure, and Characterization of Two New Layered Mixed-Metal Phosphates, BaTeMO₄(PO₄) (M = Nb⁵⁺ or Ta⁵⁺)

Orzechowski

Halasyamani

2003

Inorg. Chem.

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“…Even for a particular Ba : V : P compositional ratio, there is striking structural diversity, which is due in part to versatility of the phosphate group (its ability to form P-O-V, P-O, or P-OH links), and the lack of a strong coordination preference for the Ba> cation. However, the packing requirements of the bulky Ba> species in barium-rich phases (14) may also promote the formation of lower-dimensional VPO structures.…”

Section: Discussionmentioning

confidence: 98%

“…A number of barium vanadium phosphates (BaVPOs) have now been prepared and structurally characterized on the basis of single crystal diffraction data (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14). As is typical of vanadium compounds, the V cations in these BaVPO phases show flexibility in both oxidation state [V''', V'4, or V4] and coordination preference, leading to wide structural diversity in these materials (vide infra).…”

Section: Introductionmentioning

confidence: 98%

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Ba2(VO2)(PO4)(HPO4)·H2O, a New Barium Vanadium(V) Phosphate Hydrate Containing Trigonal Bipyramidal VO5Groups

Bircsak

Harrison

1998

Journal of Solid State Chemistry

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“…Vanadium phosphates have been extensively explored with a view to applications for catalysis . Among the various original structures of the V(IV) phosphates − and of the mixed valent V(IV)−V(V) phosphates, − that of the diphosphate K(VO) 3 (P 2 O 7 ) 2 19 is of interest. It exhibits close relationships indeed with the diphosphate tungsten bronzes with hexagonal tunnels, actually investigated for their charge density wave properties .…”

Section: Introductionmentioning

confidence: 99%

Complex Distribution of Diphosphate Groups in the Structure of V(IV) Phosphates A(VO)₃(P₂O₇)₂ (A = Sr, Pb, and Ba)

Borel¹,

Hervieu²,

Leclaire³

et al. 1999

Chem. Mater.

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New V(IV) diphosphates A(VO) 3 (P 2 O 7 ) 2 have been synthesized for A ) Ba, Sr, and Pb. Their X-ray diffraction and electron microscopy studies show their complex crystal chemistry. The polycrystalline samples of the Ba, Sr, and Pb phases and the single crystals of Sr and Pb phases exhibit a P2 1 2 1 2 1 -type structure (called R form) similar to that observed for K(VO) 3 -(P 2 O 7 ) 2 . For a single crystal of Ba(VO) 3 (P 2 O 7 ) 2 , a new structural form, called , has been stabilized. It crystallizes in the P11b space group, with cell parameters similar to those of the R form. This structure, closely related to that of the R form, differs from the latter by the distribution of the barium cations and the surrounding P 2 O 7 groups. The HREM study of polycrystalline -Ba(VO) 3 (P 2 O 7 ) 2 shows the great flexibility of this structure. It demonstrates the coexistence of the two structures, P2 1 2 1 2 1 and P11b, in many crystallites, in the form of P11b intergrowth defects in the P2 1 2 1 2 1 matrix.

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A Mixed-Valent Vanadium Monophosphate with a Chain-Like Structure: Ba3V2O3(PO4)3

Cited by 9 publications

References 11 publications

Synthesis, Structure, and Characterization of Two New Layered Mixed-Metal Phosphates, BaTeMO₄(PO₄) (M = Nb⁵⁺ or Ta⁵⁺)

Synthesis, Structure, and Characterization of Two New Layered Mixed-Metal Phosphates, BaTeMO₄(PO₄) (M = Nb⁵⁺ or Ta⁵⁺)

Ba2(VO2)(PO4)(HPO4)·H2O, a New Barium Vanadium(V) Phosphate Hydrate Containing Trigonal Bipyramidal VO5Groups

Complex Distribution of Diphosphate Groups in the Structure of V(IV) Phosphates A(VO)₃(P₂O₇)₂ (A = Sr, Pb, and Ba)

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A Mixed-Valent Vanadium Monophosphate with a Chain-Like Structure: Ba3V2O3(PO4)3

Cited by 9 publications

References 11 publications

Synthesis, Structure, and Characterization of Two New Layered Mixed-Metal Phosphates, BaTeMO4(PO4) (M = Nb5+ or Ta5+)

Synthesis, Structure, and Characterization of Two New Layered Mixed-Metal Phosphates, BaTeMO4(PO4) (M = Nb5+ or Ta5+)

Ba2(VO2)(PO4)(HPO4)·H2O, a New Barium Vanadium(V) Phosphate Hydrate Containing Trigonal Bipyramidal VO5Groups

Complex Distribution of Diphosphate Groups in the Structure of V(IV) Phosphates A(VO)3(P2O7)2 (A = Sr, Pb, and Ba)

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Synthesis, Structure, and Characterization of Two New Layered Mixed-Metal Phosphates, BaTeMO₄(PO₄) (M = Nb⁵⁺ or Ta⁵⁺)

Synthesis, Structure, and Characterization of Two New Layered Mixed-Metal Phosphates, BaTeMO₄(PO₄) (M = Nb⁵⁺ or Ta⁵⁺)

Complex Distribution of Diphosphate Groups in the Structure of V(IV) Phosphates A(VO)₃(P₂O₇)₂ (A = Sr, Pb, and Ba)