Structure of the double sulfate of hafnium and ammonium (NH/sub 4/)/sub 5/Hf/sub 6/(O/sub 4/OH)(SO/sub 4/)/sub 10/(H/sub 2/O)/sub 7/
Journal Article
·
· J. Struct. Chem. (Engl. Transl.); (United States)
OSTI ID:6337609
An x-ray diffraction structural study was carried out on (NH/sub 4/)/sub 5/Hf/sub 6/(O/sub 4/OH)(SO/sub 4/)/sub 10/(H/sub 2/O)/sub 7/ on Syntex P2/sub 1/ diffractometer using lambdaMo radiation and anisotropic refinement to R = 0.094 relative to 1728 reflections. The unit cell parameters of the orthorhombic crystals are: a = 9.969, b = 22.787, c = 23.853 A, space group Pmnb. The structure consists of hexanuclear complex anions (Hf/sub 6/(O/sub 4/OH)(SO/sub 4/)/sub 10/(H/sub 2/O)/sub 7/)/sup 5 -/ and NH/sub 4//sup +/ cations. The hafnium atoms in the anion form a planar centered pentagon located 3.331-3.955 A from each other.
- Research Organization:
- Institute of the Chemistry of Heavy and Rare Earth Metal Compounds, Apatity, USSR
- OSTI ID:
- 6337609
- Journal Information:
- J. Struct. Chem. (Engl. Transl.); (United States), Journal Name: J. Struct. Chem. (Engl. Transl.); (United States) Vol. 26:6; ISSN JSTCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
AMMONIUM COMPLEXES
AMMONIUM COMPOUNDS
AMMONIUM SULFATES
ANIONS
BOND ANGLE
CESIUM COMPOUNDS
CESIUM SULFATES
CHARGED PARTICLES
CHEMICAL BONDS
COHERENT SCATTERING
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DISTANCE
ELECTRON DENSITY
HAFNIUM COMPLEXES
HAFNIUM COMPOUNDS
HAFNIUM SULFATES
INTERATOMIC DISTANCES
IONS
LATTICE PARAMETERS
MOLECULAR STRUCTURE
ORTHORHOMBIC LATTICES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
RUBIDIUM COMPOUNDS
RUBIDIUM SULFATES
SCATTERING
SPACE GROUPS
STRUCTURAL CHEMICAL ANALYSIS
SULFATES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
360602* -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
AMMONIUM COMPLEXES
AMMONIUM COMPOUNDS
AMMONIUM SULFATES
ANIONS
BOND ANGLE
CESIUM COMPOUNDS
CESIUM SULFATES
CHARGED PARTICLES
CHEMICAL BONDS
COHERENT SCATTERING
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DISTANCE
ELECTRON DENSITY
HAFNIUM COMPLEXES
HAFNIUM COMPOUNDS
HAFNIUM SULFATES
INTERATOMIC DISTANCES
IONS
LATTICE PARAMETERS
MOLECULAR STRUCTURE
ORTHORHOMBIC LATTICES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
RUBIDIUM COMPOUNDS
RUBIDIUM SULFATES
SCATTERING
SPACE GROUPS
STRUCTURAL CHEMICAL ANALYSIS
SULFATES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION