Cis-Dichlorobis(diethylsulfide)platinum(II) is a chemical reagent that can prepare other platinum compounds. It is a colorless solid with a melting point of 173°C. cis-Dichlorobis(diethylsulfide)platinum(II) has been used in the synthesis of benzenesulfonyl chloride and benzene, which are essential intermediates for the production of pharmaceuticals such as carbapenems and fluoroquinolones. cis-Dichlorobis(diethylsulfide)platinum(II) also has an isomerization reaction with lithium, ether, or sulfide to yield cis-Dichlorobis(ethylsulfide)platinum (II).