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Metal clusters and extended metal-metal bonding in metal oxide systems

Conference ·
OSTI ID:6594037
The results of recent investigations of the synthesis and structures of ternary and quaternary molybdenum oxide compounds having metal-metal bonded cluster units or infinite chains are presented. In all cases the average oxidation state of molybdenum is less than 4+, the lowest state previously known in structurally characterized oxide phases. New compounds containing discrete clusters are LiZn/sub 2/Mo/sub 3/O/sub 8/ and Zn/sub 3/Mo/sub 3/O/sub 8/, with triangular units, and Ba/sub 1/ /sub 14/Mo/sub 8/O/sub 16/ with two variants of rhomboidal tetranuclear units, one having regular and the other distorted rhomboidal geometry. Infinite metal-metal bonded chains consisting of Mo/sub 6/ octahedral cluster units fused on opposite edges are found in the new compounds NaMo/sub 4/O/sub 6/, Ba/sub 5/(Mo/sub 4/O/sub 6/)/sub 8/, Sc/sub 0/ /sub 75/Zn/sub 1/ /sub 25/Mo/sub 4/O/sub 7/, Ti/sub 0/ /sub 5/Zn/sub 1/ /sub 5/Mo/sub 4/O/sub 7/. the effects of the differing metal-based electron counts in the repeat units of the infinite chains among these compounds are discussed with reference to metal-metal bond order and structural variations within the units. 7 figures, 4 tables.
Research Organization:
Ames Lab., IA (USA)
DOE Contract Number:
W-7405-ENG-82
OSTI ID:
6594037
Report Number(s):
IS-M-388; CONF-8205114-2; ON: DE83003793
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BOND LENGTHS
CHALCOGENIDES
COMPLEXES
DATA
DIMENSIONS
EXPERIMENTAL DATA
INFORMATION
LENGTH
LITHIUM COMPOUNDS
MOLYBDENUM COMPLEXES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
SCANDIUM COMPOUNDS
SODIUM COMPOUNDS
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
ZINC COMPOUNDS