The layered compound Tl[sub 2]NbO[sub 2]PO[sub 4]: Synthesis and crystal structure

Journal Article · Sun Jan 31 23:00:00 EST 1993 · Journal of Solid State Chemistry; (United States)

DOI:https://doi.org/10.1006/jssc.1993.1047· OSTI ID:6518623

Fakhfakh, M; Zid, M F ^[1]; Jouini, N ^[2]; Tournoux, M ^[3]

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1. Campus Universitaire, Tunis (Tunisia)
2. Ecole Normale Superieure de l'Enseignement Technique, Tunis (Tunisia) Institut des Materiaux de Nantes (France)
3. Institut des Materiaux de Nantes (France)

A new layered compound, Tl[sub 2]NbO[sub 2]PO[sub 4], has been isolated. It crystallizes in the rhombohedral system, space group R[bar 3]. The cell parameters are a = 8.746(2) [Angstrom], c = 44.753(7) [Angstrom], Z = 18. Its structure has been determined from 990 independent reflections, with I [ge] 3[sigma](I), collected on a CAD4 automated diffractometer. The final R index and weighted R[sub [omega]] index are 0.034 and 0.032, respectively. This structure is built up from layers of NbO[sub 6] octahedra and PO[sub 4] tetrahedra sharing corners. The Tl ions are located in the interlayer spaces. 19 refs., 3 figs., 5 tabs.

• OSTI ID: 6518623
• Journal Information: Journal of Solid State Chemistry; (United States), Journal Name: Journal of Solid State Chemistry; (United States) Vol. 102:2; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
LATTICE PARAMETERS
LAYERS
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
NIOBIUM PHOSPHATES
OXIDES
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
REFRACTORY METAL COMPOUNDS
SCATTERING
THALLIUM COMPOUNDS
THALLIUM PHOSPHATES
TRANSITION ELEMENT COMPOUNDS
TRIGONAL LATTICES
X-RAY DIFFRACTION