[C:1]1([NH:7][C:8](=[Se:11])[NH:9][NH2:10])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[Cl:12][Pt-2:13](Cl)(Cl)[Cl:14].[K+].[K+].[OH-].[K+]>>[Cl:12][Pt:13][Cl:14].[C:1]1([NH:7][C:8](=[Se:11])[NH:9][NH2:10])[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=11.1 g of 4-phenylselenosemicarbazide was added to 30 ml of an aqueous solution containing 1.7 g of potassium tetrachloroplatinate(II) and 560 mg of potassium hydroxide and stirred at room temperature for 10 hours. The resulting precipitate was separated by filtration and dried to obtain 1.2 g of 4-phenylselenosemicarbazide dichloroplatinum.
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