Structure determination of (3D) P/sub 2/NbS/sub 8/
Journal Article
·
· Mater. Res. Bull.; (United States)
Tridimensional P/sub 2/NbS/sub 8/ crystallizes in P4n2 tetragonal space group, with a = 12.0483(4) A /SUP sf/ , c = 7.2070(5) A /SUP sf/ , V = 1046.2(1) A/sup 3/ and z = 4. The structure was anisotropically refined down to R = 2.3% from 4/sup 08/ reflexions and 53 variables. It is built from (Nb/sub 2/S/sub 12/) biprismatic bicapped units (average d /SUB Nb-S/ = 2.571 A /SUP sf/ ) made of S-II and S/sub 2//sup -11/ anion (dianionic distance of 2.014(3) A /SUP sf/ ). The niobium atoms are found as isolated Nb /SUP IV/ - Nb /SUP IV/ pairs (d /SUB Nb-Nb/ = 2.859(1) A /SUP sf/ ) in these niobium group otherwise linked to each other through (PS/sub 4/) tetrahedral units (average d /SUB p-S/ = 2.051 A /SUP sf/ ) themselves constituting interbonded (P/sub 4/S/sub 12/) rings. The P/sub 2/NbS/sub 8/ three-dimensional network thus obtained is compared to the (2D) P/sub 2/NbS/sub 8/, layered phase already described.
- Research Organization:
- Laboratoire de Physicochimie des Solides, Nantes
- OSTI ID:
- 6316745
- Journal Information:
- Mater. Res. Bull.; (United States), Journal Name: Mater. Res. Bull.; (United States) Vol. 19:1; ISSN MRBUA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ANISOTROPY
CHALCOGENIDES
CHARGED PARTICLES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
CRYSTALLIZATION
CRYSTALLOGRAPHY
IONS
NIOBIUM COMPOUNDS
NIOBIUM SULFIDES
PHASE TRANSFORMATIONS
PHOSPHORUS COMPOUNDS
PHOSPHORUS SULFIDES
REFRACTORY METAL COMPOUNDS
STRUCTURAL CHEMICAL ANALYSIS
SULFIDES
SULFUR COMPOUNDS
SULFUR IONS
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
360102* -- Metals & Alloys-- Structure & Phase Studies
ANISOTROPY
CHALCOGENIDES
CHARGED PARTICLES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
CRYSTALLIZATION
CRYSTALLOGRAPHY
IONS
NIOBIUM COMPOUNDS
NIOBIUM SULFIDES
PHASE TRANSFORMATIONS
PHOSPHORUS COMPOUNDS
PHOSPHORUS SULFIDES
REFRACTORY METAL COMPOUNDS
STRUCTURAL CHEMICAL ANALYSIS
SULFIDES
SULFUR COMPOUNDS
SULFUR IONS
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS