Structure and electrical properties of Nb/sub 8/PtSe/sub 20/

Journal Article · Sun Nov 01 04:00:00 EST 1987 · J. Solid State Chem.; (United States)

DOI:https://doi.org/10.1016/0022-4596(87)90138-1· OSTI ID:5572454

Sunshine, S A; Ibers, J A

The new layered ternary chalcogenide Nb/sub 8/PtSe/sub 20/ has been synthesized and structurally characterized. This compound crystallizes in the monoclinic system in space group C/sub 2h//sup 3/-C2/m with cell dimensions a = 20.096(12), b = 3.433(2), c = 19.289(11) A, and ..beta.. = 107.1(5)/sup 0/. This structure contains four unique Nb atoms, two in trigonal prismatic environments, one in a monocapped trigonal prismatic site, and one in a bicapped trigonal prism of Se atoms. The bicapped trigonal prism contains an Se-Se bond (d = 2.36(2) A). The Pt atoms exhibit square-planar coordination. Electrical conductivity measurements over the temperature range 110-300 K indicate that this material is a metal (sigma/sub RT/ = 1.5 X 10/sup 3/ Omega/sup -1/ cm/sup -1/).

• Research Organization: Northwestern Univ., Evanston, IL
• OSTI ID: 5572454
• Journal Information: J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 71:1; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
BOND LENGTHS
CHALCOGENIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DATA
DIMENSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
INFORMATION
LATTICE PARAMETERS
LENGTH
LOW TEMPERATURE
MEDIUM TEMPERATURE
MONOCLINIC LATTICES
NIOBIUM COMPOUNDS
NIOBIUM SELENIDES
NUMERICAL DATA
PHYSICAL PROPERTIES
PLATINUM COMPOUNDS
REFRACTORY METAL COMPOUNDS
SELENIDES
SELENIUM COMPOUNDS
SPACE GROUPS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS