NaMo/sub 2/P/sub 4/O/sub 14/: a mixed-valence molybdenum phosphate with a tunnel structure
Journal Article
·
· J. Solid State Chem.; (United States)
The crystal structure of NaMo/sub 2/P/sub 4/O/sub 14/ has been determined from single-crystal x-ray diffraction data. NaMo/sub 2/P/sub 4/O/sub 14/ crystallizes in the triclinic space group P /anti 1/ with a = 4.872(1), b = 7.0025(7), c = 8.2620(6) /angstrom/, ..cap alpha.. = 91.468(8), ..beta.. = 92.53(1), ..gamma.. = 106.61(1)/degrees/, Z = 1, R = 0.020, R/sub W/ = 0.029, GOF = 1.192 for 1166 reflections with I > 2.5 sigma(I). The structure contains two types of tunnels of which the larger one is occupied by sodium atoms. The framework is built up from MoO/sub 6/ octahedra and P/sub 2/O/sub 7/ groups. It is the first molybdenum phosphate in which equal amounts of isolated Mo/sup 3 +/ and Mo/sup 4 +/ are simultaneously present. A single-phase product can be obtained by heating appropriate amounts of Na/sub 2/MoO/sub 4/, MoO/sub 2/, Mo, and P/sub 2/O/sub 5/ in a sealed silica tube at 1100/degrees/C.
- Research Organization:
- Institute of Chemistry, Taipei (Taiwan)
- OSTI ID:
- 6085149
- Journal Information:
- J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 78:1; ISSN JSSCB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
DATA
DIFFRACTION
EXPERIMENTAL DATA
INFORMATION
LATTICE PARAMETERS
MOLYBDENUM COMPOUNDS
MOLYBDENUM PHOSPHATES
MONOCRYSTALS
NUMERICAL DATA
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
REFRACTORY METAL COMPOUNDS
SCATTERING
SODIUM COMPOUNDS
SPACE GROUPS
TRANSITION ELEMENT COMPOUNDS
TRICLINIC LATTICES
X-RAY DIFFRACTION
360602 -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
DATA
DIFFRACTION
EXPERIMENTAL DATA
INFORMATION
LATTICE PARAMETERS
MOLYBDENUM COMPOUNDS
MOLYBDENUM PHOSPHATES
MONOCRYSTALS
NUMERICAL DATA
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
REFRACTORY METAL COMPOUNDS
SCATTERING
SODIUM COMPOUNDS
SPACE GROUPS
TRANSITION ELEMENT COMPOUNDS
TRICLINIC LATTICES
X-RAY DIFFRACTION