Abstract
1. Methods were described for the preparation of the pure cis-isomers of theβ-chlorovinyl compounds of mercury and thallium and some of their new constants were given. 2. The NMR and IR spectra of the cis- and trans-isomers of theβ-chlorovinyl compounds of mercury, thallium and tin characterize the purity of the described stereoisomers. 3. The previously expressed rule regarding the retention of configuration of the cis- and trans-β-chlorovinyl groups in electrophilic and homolytic substitution reactions was again corroborated.
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