Different methods for the synthesis of anionic dimethyl sulfide platinum complexes of the type Q[PtCl3(Me2S)] (Q = triphenylbenzylphosphonium, Ph3PBzl, or tetrabutylammonium, Bu4N) and [Pt(μ-Cl)Cl(Me2S)]2 are reported. The compounds Q[PtCl3(Me2S)] were prepared by interaction of [PtCl4]2− with an excess of Me2S in non-aqueous media, reduction of [PtCl5(Me2S)]− with hydrazine sulfate, bridge-splitting reactions of (Ph3PBzl)2[Pt2(μ-Cl)2Cl4] and [Pt(μ-Cl)Cl(Me2S)]2 with two equivalents of Me2S and (Ph3PBzl)Cl, respectively, and substitution of dimethyl sulfide in trans-[PtCl2(Me2S)2]. The [Pt(μ-Cl)Cl(Me2S)]2 dimer was prepared via reaction of cis-[PtCl2(Me2S)2] with two equivalents of silver nitrate followed by separation of AgCl(s) and addition of one equivalent of K2[PtCl4]. The structure of (Ph3PBzl)[PtCl3(Me2S)] was determined by X-ray single crystal analysis. The compound crystallizes in the space group P21/n with a = 9.746(3), b = 19.511(4), c = 14.966(4) Å, β = 100.43(2)°, V = 2799.0(9) Å3 and Z = 4.