The niobium phosphate bronze K sub 5 minus x Nb sub 8 P sub 5 O sub 34 , a new tunnel structure, first member of the series (K sub 3 Nb sub 6 P sub 4 O sub 26 ) sub n ter dot KNb sub 2 PO sub 8

Journal Article · Wed Aug 01 04:00:00 EDT 1990 · Journal of Solid State Chemistry; (USA)

DOI:https://doi.org/10.1016/0022-4596(90)90038-Y· OSTI ID:6450222

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

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1. Universite de Caen (France)

A new niobium phosphate bronze K{sub 5{minus}x}Nb{sub 8}P{sub 5}O{sub 34} has been isolated. The structure of this phase has been determined from a single crystal of composition K{sub 4}Nb{sub 8}P{sub 5}O{sub 34} by x-ray diffraction. It crystallizes in the space group P2/c with a = 13.904 (6) {angstrom}, b = 6.453 (3) {angstrom}, c = 20.64 (1) {angstrom}, {beta} = 125.05{degree} (1). This structure consists of (Nb{sub 3}P{sub 2}O{sub 13}){infinity} layers parallel to (100) linked through PO{sub 4} tetrahedra and (Nb{sub 2}O{sub 11}) units. The structural relationships between this bronze and the other members of the series (K{sub 3}Nb{sub 6}P{sub 4}O{sub 26}){sub n}KNb{sub 2}PO{sub 8} are discussed. Attention is drawn to the fact that for this particular n = 1 value two structural forms can be expected.

• OSTI ID: 6450222
• Journal Information: Journal of Solid State Chemistry; (USA), Journal Name: Journal of Solid State Chemistry; (USA) Vol. 87:2; ISSN 0022-4596; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
BRONZE
COHERENT SCATTERING
COPPER ALLOYS
COPPER BASE ALLOYS
CRYSTAL STRUCTURE
DATA
DIFFRACTION
EXPERIMENTAL DATA
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
NIOBIUM COMPOUNDS
NIOBIUM PHOSPHATES
NUMERICAL DATA
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
REFRACTORY METAL COMPOUNDS
SCATTERING
TIN ALLOYS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION