A new vanadium III potassium phosphate with a cage structure: K sub 6 V sub 2 P sub 4 O sub 16

Journal Article · Mon Apr 01 04:00:00 EST 1991 · Journal of Solid State Chemistry; (USA)

DOI:https://doi.org/10.1016/0022-4596(91)90080-2· OSTI ID:5743670

Benhamada, L; Grandin, A; Borel, M M; Leclaire, A; Raveau, B ^[1]

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1. Crismat,Caen (France)

A new vanadium III phosphate, K{sub 6}V{sub 2}P{sub 4}O{sub 16}, with a cage structure has been isolated. Its structure was solved by single crystal x-ray diffraction. It crystallizes in the monoclinic system with the space group P2{sub 1}/c. The cell parameters are a =9.578(1) {angstrom}, b=11.097(1) {angstrom}, c=18.127(2) {angstrom}, {beta}= 121.67{degree}(1). The (V{sub 2}P{sub 4}O{sub 16}){infinity} host lattice is rather complex and very original. It consists of corner and edge-sharing PO{sub 4} tetrahedral and VO{sub 6} octahedra. This ability of the PO{sub 4} tetrahedron to share one edge with an octahedron has been observed in other M(III) compounds:{alpha} CrPO{sub 4} and NaV{sub 3}P{sub 3}O{sub 12}. The small number of links between the (V{sub 2}P{sub 4}O{sub 18}){infinity} chains makes the (V{sub 2}P{sub 4}O{sub 16}){infinity} framework very flexible, so that its cohesion is in fact ensured by a great number of K{sup +} ions.

• OSTI ID: 5743670
• Journal Information: Journal of Solid State Chemistry; (USA), Journal Name: Journal of Solid State Chemistry; (USA) Vol. 91:2; ISSN 0022-4596; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALI METAL COMPOUNDS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DATA
DIFFRACTION
EXPERIMENTAL DATA
INFORMATION
LATTICE PARAMETERS
MONOCLINIC LATTICES
NUMERICAL DATA
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM PHOSPHATES
SCATTERING
SPACE GROUPS
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM PHOSPHATES
X-RAY DIFFRACTION