Ternary molybdenum chalcogenides: a route to new extended clusters

Conference · Fri Mar 15 04:00:00 EST 1985 · J. Solid State Chem.; (United States)

OSTI ID:5650958

Chevrel, R; Gougeon, P; Potel, M; Sergent, M

Within the last decade, the ternary molybdenum chalcogenides have played a major role in superconductivity: opening of the ternary superconductor range and competition between superconductivity and magnetism. It is mainly due to the pseudomolecular nature of the Mo/sub 6/X/sub 8/ unit. In these materials, the Mo/sub 6/ cluster plays the electron-acceptor role and the number of valence electrons per molybdenum atom is related to the Mo-Mo intracluster bonding. The increase of this valence electron concentration (VEC) per molybdenum in new ternary chalcogenides corresponds to larger and larger clusters. These new extended clusters belong to a very large family containing the general Mo/sub 3n/X/sub 3n + 2/ (n greater than or equal to 2) block unit. The tridimensional stacking of these building blocks provides more and more large channels and leads to a more and more anisotropic character of their physical properties. 23 references, 6 figures, 3 tables.

• Research Organization: Universite de Rennes-Beaulieu, Rennes Cedex, France
• OSTI ID: 5650958
• Report Number(s): CONF-840415-
• Conference Information: Journal Name: J. Solid State Chem.; (United States) Journal Volume: 57:1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CESIUM COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DOCUMENT TYPES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
INDIUM COMPOUNDS
MOLYBDENUM COMPOUNDS
MOLYBDENUM SELENIDES
MOLYBDENUM SULFIDES
MOLYBDENUM TELLURIDES
PHYSICAL PROPERTIES
POTASSIUM COMPOUNDS
REFRACTORY METAL COMPOUNDS
REVIEWS
RUBIDIUM COMPOUNDS
SCATTERING
SELENIDES
SELENIUM COMPOUNDS
SILVER COMPOUNDS
SODIUM COMPOUNDS
SPACE GROUPS
STRUCTURAL CHEMICAL ANALYSIS
SULFIDES
SULFUR COMPOUNDS
SUPERCONDUCTIVITY
TELLURIDES
TELLURIUM COMPOUNDS
THALLIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VALENCE
X-RAY DIFFRACTION