Optical spectra of the difluoride, dichloride, and trichloride ions in the matrix-isolated M/sup +/F/sub 2//sup -/, M/sup +/Cl/sub 2//sup -/, and M/sup +/Cl/sub 3//sup -/ species. [17/sup 0/K; characterization of unstable intermediates; M = Na, Li, or K]
Journal Article
·
· J. Am. Chem. Soc.; (United States)
Alkali metal atoms were codeposited with fluorine and chlorine at high dilution in argon on a sapphire plate cooled to 17/sup 0/K. Ultraviolet spectra contained strong absorptions near 300 nm for M/sup +/F/sub 2//sup -/ and 340 nm for M/sup +/Cl/sub 2//sup -/ which are assigned to the sigma ..-->.. sigma* transition of the dihalide anion. This transition for Cl/sub 2//sup -/ occurs at half of the energy known for Cl/sub 2/. The alkali metal effect on the absorption spectra is consistent with an ionic model of polarized ion pairs. In addition, the strong ultraviolet band of the trichloride anion was observed at 250 nm with the metal-chlorine reactions and with the matrix reactions of CsCl and Cl/sub 2/. (auth)
- Research Organization:
- Univ. of California, Berkeley
- OSTI ID:
- 7279915
- Journal Information:
- J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 98:8; ISSN JACSA
- 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
ALKALI METALS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ARGON
CESIUM CHLORIDES
CESIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL BONDS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CORUNDUM
DECOMPOSITION
ELEMENTS
ENERGY-LEVEL TRANSITIONS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INTERMEDIATE STRUCTURE
KINETICS
LITHIUM
MATRIX ELEMENTS
METALS
MINERALS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
POTASSIUM
RARE GASES
REACTION KINETICS
SAPPHIRE
SODIUM
SPECTRA
STABILITY
ULTRAVIOLET SPECTRA
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
ALKALI METALS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ARGON
CESIUM CHLORIDES
CESIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL BONDS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CORUNDUM
DECOMPOSITION
ELEMENTS
ENERGY-LEVEL TRANSITIONS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INTERMEDIATE STRUCTURE
KINETICS
LITHIUM
MATRIX ELEMENTS
METALS
MINERALS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
POTASSIUM
RARE GASES
REACTION KINETICS
SAPPHIRE
SODIUM
SPECTRA
STABILITY
ULTRAVIOLET SPECTRA