DFT investigation of the thermodynamics and mechanism of electrophilic chlorination and iodination of arenes.
J Mol Model
; 17(11): 2759-71, 2011 Nov.
Article
em En
| MEDLINE
| ID: mdl-21279527
ABSTRACT
Quantum chemical calculations at the B3LYP/6-311G level have been carried out in order to investigate the reaction mechanisms of the iodination of benzene and its monosubstituted derivatives with ICl, I(+), I (3) (+) and reagents containing N-I and O-I bonds as the iodinating agents. The results are compared with those obtained for chlorination by Cl(+) and Cl(2), both in the gas phase and in methanol solution using the PCM solvent model. We have also used the MP2/DGDZVP level of theory and the IEFPCM model to perform comparisons in a few cases. The thermodynamic parameters for the reactions have been calculated, the structures of the intermediate products (π- and σ-complexes) and transition states have been optimized, and the profiles of the free energy surfaces have been constructed.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Termodinâmica
/
Derivados de Benzeno
Idioma:
En
Revista:
J Mol Model
Ano de publicação:
2011
Tipo de documento:
Article