Published 1982
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About possible nature of univalent astatine cation entering the electrophilic aromatic substitution in heterogeneous medium in the presence of acids
Description
It has been shown that for 15-20 min. of heating at 180-190 deg C, astatobenzene is formed with the yields of above 90% in the systems of benzene-astatine-solution in HClO4 or H2SO4. Activation energy of the astatination process was found to be (32+-2) Kcal./Mole. Protonated hypoastatic acid - (H2-OAt)+ formed in aqueous acidic solutions was supposed to be responsible for the electrophilic astatination reaction with benzene and its halogen-derivatives
Availability note (English)
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15012576.pdf
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Additional details
Additional titles
- Original title (Russian)
- О вероятной природе одновалентного катиона астата, вступающего в электрофильное ароматическое замещение в гетерогенной среде в присуцтвии кислот
Publishing Information
- Imprint Pagination
- 6 p.
- Report number
- JINR-R--12-82-539
INIS
- Country of Publication
- USSR
- Country of Input or Organization
- USSR
- INIS RN
- 15012576
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Descriptors DEI
- ACTIVATION ENERGY; AROMATICS; ASTATINATION; ASTATINE COMPOUNDS; BINDING ENERGY; CHEMICAL REACTION KINETICS; CHEMICAL REACTION YIELD; ELECTRONS; HEATING; HIGH TEMPERATURE; HYDROCARBONS; PERCHLORIC ACID; PROTONS; SOLUTIONS; SULFURIC ACID; VALENCE
- Descriptors DEC
- BARYONS; CATIONS; CHARGED PARTICLES; CHEMICAL REACTIONS; CHLORINE COMPOUNDS; DISPERSIONS; ELEMENTARY PARTICLES; ENERGY; FERMIONS; HADRONS; HALOGEN COMPOUNDS; HALOGENATION; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; INORGANIC ACIDS; IONS; KINETICS; LEPTONS; MIXTURES; NUCLEONS; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; REACTION KINETICS; SULFUR COMPOUNDS
Optional Information
- Notes
- 7 refs.; 4 tabs.; submitted to the journal Radiochem. Radioanal. Lett.