Some substitutional chemistry in known ternary and quaternary chalcogenides. [Ta/sub 2/Ni/sub 3/S/sub 8/, Ta/sub 2/Pt/sub 3/Se/sub 8/, and Co/sub 2/Nb/sub 4/PdSe/sub 12/]
Journal Article
·
· J. Solid State Chem.; (United States)
New ternary and quaternary transition-metal chalcogenides have resulted from substitutional chemistry of known phases. Ta/sub 2/Ni/sub 3/S/sub 8/ and Ta/sub 2/Pt/sub 3/Se/sub 8/ have been synthesized and characterized by single-crystal X-ray techniques. These compounds adopt the Nb/sub 2/Pd/sub 3/Se/sub 8/ structural type. Hence in Ta/sub 2/Ni/sub 3/S/sub 8/ Ni occupies both square-planar and square-pyramidal sites as similarly does Pt in Ta/sub 2/Pt/sub 3/Se/sub 8/. The electrical conductivity of Ta/sub 2/Ni/sub 3/S/sub 8/ establishes its semiconducting behavior. Ta has been substituted for Nb in the Nb/sub 2/Pd/sub 0.71/Se/sub 5/ type to yield Ta/sub 2/Pd/sub 0.89/S/sub 5/ which has been characterized by single crystal X-ray techniques. The square-planar Pd sites in the van der Waals' gap of this layer structure are 78.6(4)% occupied. This compound shows metallic behavior. The compound Co/sub 2/Nb/sub 4/PdSe/sub 12/ has been synthesized and characterized by single-crystal X-ray techniques. It is of the Co/sub 2/Ta/sub 4/PdSe/sub 12/ structural type and thus contains Nb in both trigonal prismatic and octahedral sites.
- Research Organization:
- Northwestern Univ., Evanston, IL
- OSTI ID:
- 7203653
- Journal Information:
- J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 64:3; ISSN JSSCB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
BOND ANGLE
BOND LENGTHS
CHALCOGENIDES
COBALT COMPLEXES
COHERENT SCATTERING
COMPLEXES
CRYSTAL STRUCTURE
CRYSTALLIZATION
DATA
DIFFRACTION
DIMENSIONS
EXPERIMENTAL DATA
INFORMATION
LATTICE PARAMETERS
LENGTH
LOW TEMPERATURE
NICKEL COMPOUNDS
NICKEL SULFIDES
NIOBIUM COMPLEXES
NUMERICAL DATA
PALLADIUM COMPOUNDS
PHASE TRANSFORMATIONS
PLATINUM COMPOUNDS
SCATTERING
SELENIDES
SELENIUM COMPOUNDS
SPACE GROUPS
STOICHIOMETRY
SULFIDES
SULFUR COMPOUNDS
TANTALUM COMPLEXES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
400201* -- Chemical & Physicochemical Properties
BOND ANGLE
BOND LENGTHS
CHALCOGENIDES
COBALT COMPLEXES
COHERENT SCATTERING
COMPLEXES
CRYSTAL STRUCTURE
CRYSTALLIZATION
DATA
DIFFRACTION
DIMENSIONS
EXPERIMENTAL DATA
INFORMATION
LATTICE PARAMETERS
LENGTH
LOW TEMPERATURE
NICKEL COMPOUNDS
NICKEL SULFIDES
NIOBIUM COMPLEXES
NUMERICAL DATA
PALLADIUM COMPOUNDS
PHASE TRANSFORMATIONS
PLATINUM COMPOUNDS
SCATTERING
SELENIDES
SELENIUM COMPOUNDS
SPACE GROUPS
STOICHIOMETRY
SULFIDES
SULFUR COMPOUNDS
TANTALUM COMPLEXES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION