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Kinetics and mechanism of dimerization of arylmercurials

✍ Scribed by Yulan Wang

Publisher: John Wiley and Sons
Year: 1993
Tongue: English
Weight: 275 KB
Volume: 25
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550250204

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✦ Synopsis

The kinetics of dimerization of arylmercurials XCeH4HgCl (X = H, p-CH3, rn-CH3, p-C1, m-OCH3, rn-COzCzH5, and o-OCH~) in the presence of [ClRh(C0)212 was studied in hexamethylphosphoramide (HMPA). The experimental rate law obtained is -d[ArHgCll/dt = k[ArHgC1I2. The kinetic parameters of these reactions have been reported, and the variation, therein, has been explained on the basis of steric effect of substituents. The apparent activation energy E is linearly proportional to pre-exponential factor 1nA. A most plausible mechanism has been proposed on the basis of experimental results.

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