[N,N'-Bis(2-aminoethyl-[kappa]N)-N,N'-bis(2-ammonioethyl)ethylenediamine-[kappa]²N,N']platinum(II) Bis(tetrachloroplatinate) Trihydrate

The reaction between K₂PtCl₄ and penten [N,N,N',N'-tetrakis(2-aminoethyl)ethylenediamine] gave a Magnus-type double salt, [Pt(C₁₀H₃₀N₆)][PtCl₄]₂.3H₂O, in which the diprotonated penten ligand (pentenH₂) serves as a tetradentate chelating ligand. The complex involves an ion pair, {[Pt(pentenH₂)][PtCl₄]}²⁺. These two mononuclear units have an attractive interaction for each other, with several hydrogen bonds formed between the amine groups and Cl atoms. The two Pt atoms are shifted out of their ideal coordination planes towards each other and the Pt...Pt distance within this unit is 3.414 (3) Å.

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