Crystal chemistry and magnetic behavior of graphite intercalation compounds with transition metal fluorides

Journal Article · Wed Nov 30 23:00:00 EST 1988 · J. Solid State Chem.; (United States)

DOI:https://doi.org/10.1016/0022-4596(88)90248-4· OSTI ID:6222159

Flandrois, S; Grannec, J; Hauw, C; Hun, B; Lozano, L; Tressaud, A

Intercalation of RuF/sub 5/ and OsF/sub 5/ into graphite has been investigated using the vapor phase method. Stage 3 to stage 1 compounds were obtained depending on experimental conditions. The unit-cell constants of the intercalated layers were determined on Weissenberg patterns of a single crystal of C/sub 20/RuF/sub 4.5/ composition. A possible arrangement of (RuF/sub 4/) chains containing ruthenium in octahedral coordination is proposed. A charge transfer of 0.5 electron per intercalated RuF/sub 4.5/ unit is deduced from coordination the variation of C-C bond length. Structural phase transitions have been investigated on singly-crystals between 120 K and room temperature. The material shows a metallic behavior and a hystersis phenomenon occurring around 130 K in the resistivity variation may result from an incommensurate /r equilibrium/ commensurate transition. The magnetic behavior of Ru- and Os-intercalated salts is completely different from that of pure pentafluoride and corresponds to Ru(+IV) and Os(+V) species, respectively.

• Research Organization: Universite de Bordeaux (France)
• OSTI ID: 6222159
• Journal Information: J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 77:2; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400400 -- Electrochemistry
CARBON
CHEMICAL REACTIONS
CHEMISTRY
CLATHRATES
CRYSTAL STRUCTURE
DATA
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELEMENTAL MINERALS
ELEMENTS
EXPERIMENTAL DATA
FLUORIDES
FLUORINE COMPOUNDS
GRAPHITE
HALIDES
HALOGEN COMPOUNDS
INFORMATION
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
METAL-GAS BATTERIES
MINERALS
NONMETALS
NUMERICAL DATA
OSMIUM COMPOUNDS
OSMIUM FLUORIDES
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPOUNDS
RUTHENIUM FLUORIDES
TRANSITION ELEMENT COMPOUNDS