Thermal stability and crystal structure of the double molybdate Li/sub 7/Ho/sub 3/(MoO/sub 4/)/sub 8/

Journal Article · Sun Oct 31 23:00:00 EST 1982 · J. Struct. Chem. (Engl. Transl.); (United States)

OSTI ID:6201400

Ipatova, E N; Klevtsova, R F; Solv'eve, A P; Klevtsov, P V

The compound Li/sub 7/Ho/sub 3/(MoO/sub 4/)/sub 8/ undergoes thermal decomposition at 725/sup 0/C to the double molybdate LiHo(MoO/sub 4/)/sub 2/ (solid) and normal Li/sub 2/MoO/sub 4/ (liquid). It crystallizes in a triclinic unit cell with parameters: a = 5.191, b = 6.729, c = 10.279 angstroms, ..cap alpha.. = 108.10, ..beta.. = 100.19, ..gamma.. = 66.31/sup 0/, space group Pl, Z = 0.5. The crystal-chemical content of the cell is: Li/sub 3/(Ho/sub 0.75/Li/sub 0.25/)/sub 2/(MoO/sub 4/)/sub 4/. The crystal structure is made up of layers of eight-apex M polyhedra (M = 0.75Ho + 0.25Li), joined through shared edges and shared apices with the Mo tetrahedra surrounding them. The layers are parallel to (001) and are joined to one another through Li atoms. The structure is closely related to the scheelite structure.

• Research Organization: Academy of Sciences of the USSR, Siberia
• OSTI ID: 6201400
• Journal Information: J. Struct. Chem. (Engl. Transl.); (United States), Journal Name: J. Struct. Chem. (Engl. Transl.); (United States) Vol. 23:3; ISSN JSTCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
CHEMICAL REACTIONS
COORDINATES
CRYSTAL STRUCTURE
DECOMPOSITION
DISTANCE
HOLMIUM COMPOUNDS
INTERATOMIC DISTANCES
LATTICE PARAMETERS
LITHIUM COMPOUNDS
MOLYBDATES
MOLYBDENUM COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PYROLYSIS
RARE EARTH COMPOUNDS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS