Photochemical reactions of nitrite complexes of platinum(IV)
The photochemical reactions of complex nitrites of platinum(IV) with the general formula K/sub 2/ (Pt(NO/sub 2/)/sub 6-x/X/sub x/, where X = Cl/sup -/, Br/sup -/, and x = 0 to 3, have been studied. It has been shown that the absorption spectra of all the nitrite complexes display two intense bands at lambda = 330 and 280 nm. Photoexcitation of the complex nitrites of Pt(IV) in aqueous solutions (T = 293/sup 0/K) at wavelengths from 254 to 404 nm results in the occurrence of a single photoreduction reaction to the corresponding platinum(II) nitrates, regardless of the composition of the complex ion. The quantum yields of the photoreduction reaction have been measured. It has been established that photolysis at low temperature (T = 77/sup 0/K) and in rigid matrices (glycerol-water and polyvinyl alcohol films) results in the formation of nitrito isomers of the platinum(IV) complex. It has been shown that two intraligand charge-transfer states are the states responsible for the photochemical reactions.
- Research Organization:
- A.I. Gertsen Leningrad State Pedagogic Institute, USSR
- OSTI ID:
- 6509470
- Journal Information:
- Sov. J. Coordinat. Chem.; (United States), Vol. 11:8; Other Information: Translated from Koordinatsionnaya Khimiya; 11: No.8, 1121-1126(Aug 1985)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
NITRITES
PHOTOCHEMICAL REACTIONS
PLATINUM COMPLEXES
ABSORPTION SPECTRA
AQUEOUS SOLUTIONS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
INFRARED SPECTRA
ISOMERS
PH VALUE
PHOTOSENSITIVITY
PLATINUM BROMIDES
PLATINUM CHLORIDES
POTASSIUM COMPOUNDS
RAMAN SPECTRA
ALKALI METAL COMPOUNDS
BROMIDES
BROMINE COMPOUNDS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COMPLEXES
DISPERSIONS
ENERGY LEVELS
HALIDES
HALOGEN COMPOUNDS
KINETICS
MIXTURES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PLATINUM COMPOUNDS
REACTION KINETICS
SENSITIVITY
SOLUTIONS
SPECTRA
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
YIELDS
400201* - Chemical & Physicochemical Properties
400500 - Photochemistry