Crystal structure and optical properties of potassium pentafluorohafnate monohydrate, KHfF5 · H2O
Abstract
Single crystals of KHfF5 · H2O have been studied by means of single crystal-structure refinement and optical refractometry.
The space group is P21/c, Z = 8, a = 7.853(2), b = 12.068(5), c = 11.053(5) Å, β = 99.61(4)°. The structure was refined by full-matrix least-squares methods to an R value of 0.03 for 1641 independent observed reflections and revealed to be isostructural to KZrF5 · H2O.
Each Hf atom is eightfold coordinated by seven F atoms and one H2O molecule. The two non-equivalent Hf polyhedra are linked into infinite chains parallel [100] by sharing alternatively three and one F atom. The chains are additional strengthened by hydrogen bonds and are connected to layers parallel (010) by further hydrogen bonds. The potassium cations are situated between these layers in irregular coordinations.
The indices of refraction and optic axial angle have been determined with the microrefractometer spindle-stage.
Articles in the same Issue
- The crystal and molecular structure of aceto-acetanilide hydrazone pigment N-phenyl-2-(4-chloro-phenylhydrazono)-3-oxo-butyramide
- The crystal and molecular structure of azo disperse dye 3-(4-diethylamino-phenyl-azo)phthalimide
- Crystal structure and bonding of tris(3-methylpyridinium)(3-ethylpyridinium) β-octamolybdate
- Structure cristalline d'un chloro-silico-chromate de plomb, Pb5(CrO4,SiO4)3Cl
- The single chain arsenites Pb(AsO2)Cl and Pb2(AsO2)3Cl. Preparation and structure investigation
- Crystal state conformation of a β,β′-disubstituted dehydroaminoacid derivative
- Room temperature X-ray crystal structure analysis of a twinned crystal of high-Tc superconducting YBa2Cu3O7−x(0 ≤ x ≤ 0.10)
- Crystal structure and optical properties of potassium pentafluorohafnate monohydrate, KHfF5 · H2O
- The structures of crystalline hydrogen bromide
- NaxMoP2O7, a mixed valence molybdenum diphosphate with a tunnel structure
- The oxygen packings of low-quartz and ReO3 under high pressure
- Indigo: Crystal structure refinement based on synchrotron data
- The crystal structure of silver(I) 2-hydroxybenzoate and silver(I) 2,6-dihydroxybenzoate
- Crystal structure of the cyanospinel Tl2Zn(CN)4 and structure relationship in the cyanospinel group
- Crystal structure and hydrogen bonding of 2,5-dihydroxy-3,6-dimethyl-p-benzoquinone
- Crystal structure of iodanilic acid
- Can X-ray crystal structure analysis decide between twinning by pseudo-merohedry and statistical distribution in YBa2Cu3O7?
Articles in the same Issue
- The crystal and molecular structure of aceto-acetanilide hydrazone pigment N-phenyl-2-(4-chloro-phenylhydrazono)-3-oxo-butyramide
- The crystal and molecular structure of azo disperse dye 3-(4-diethylamino-phenyl-azo)phthalimide
- Crystal structure and bonding of tris(3-methylpyridinium)(3-ethylpyridinium) β-octamolybdate
- Structure cristalline d'un chloro-silico-chromate de plomb, Pb5(CrO4,SiO4)3Cl
- The single chain arsenites Pb(AsO2)Cl and Pb2(AsO2)3Cl. Preparation and structure investigation
- Crystal state conformation of a β,β′-disubstituted dehydroaminoacid derivative
- Room temperature X-ray crystal structure analysis of a twinned crystal of high-Tc superconducting YBa2Cu3O7−x(0 ≤ x ≤ 0.10)
- Crystal structure and optical properties of potassium pentafluorohafnate monohydrate, KHfF5 · H2O
- The structures of crystalline hydrogen bromide
- NaxMoP2O7, a mixed valence molybdenum diphosphate with a tunnel structure
- The oxygen packings of low-quartz and ReO3 under high pressure
- Indigo: Crystal structure refinement based on synchrotron data
- The crystal structure of silver(I) 2-hydroxybenzoate and silver(I) 2,6-dihydroxybenzoate
- Crystal structure of the cyanospinel Tl2Zn(CN)4 and structure relationship in the cyanospinel group
- Crystal structure and hydrogen bonding of 2,5-dihydroxy-3,6-dimethyl-p-benzoquinone
- Crystal structure of iodanilic acid
- Can X-ray crystal structure analysis decide between twinning by pseudo-merohedry and statistical distribution in YBa2Cu3O7?
