Quantitative infrared spectroscopic method for the study of the hydration of ions in aqueous solutions
An infrared spectroscopic method for the study of the hydration of ions in aqueous solutions has been developed. OD stretching bands of isotopically dilute HDO molecules in the first hydration sphere of ions are obtained when the absorption from H/sub 2/O molecules and HDO molecules in the bulk water are removed by a double difference technique. The method is applied to aqueous solutions of Ni(ClO/sub 4/)/sub 2/, Ni(BF/sub 4/)/sub 2/, and Ni(PF/sub 6/)/sub 2/. Coordination numbers of 4.6 +/- 0.8 for the ClO/sub 4//sup -/ anion and 3.9 +/- 0.8 for the BF/sub 4//sup -/ anion are obtained. A systematic study of the influence of different salt and HDO concentrations has been undertaken. It is found that Lambert-Beer's law is valid in the concentration ranges studied.
- Research Organization:
- Univ. of Uppsala (Sweden)
- OSTI ID:
- 6977819
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 92:9; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
ANIONS
AQUEOUS SOLUTIONS
BORON COMPOUNDS
BORON FLUORIDES
CATIONS
CHARGED PARTICLES
CHLORINE COMPOUNDS
COMPLEXES
DEUTERIUM
DEUTERIUM COMPOUNDS
DISPERSIONS
ENERGY LEVELS
EXCITED STATES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HEAVY WATER
HYDRATION
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
INFRARED SPECTRA
IONS
ISOTOPES
LIGHT NUCLEI
MIXTURES
NICKEL COMPLEXES
NUCLEI
ODD-ODD NUCLEI
OXYGEN COMPOUNDS
PERCHLORATES
PHOSPHORUS COMPOUNDS
PHOSPHORUS FLUORIDES
SOLUTIONS
SOLVATION
SPECTRA
SPECTROSCOPY
STABLE ISOTOPES
TRANSITION ELEMENT COMPLEXES
VIBRATIONAL STATES
WATER