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The reaction of pharmacological active protic ionic liquid tris-(2-hydroxyethyl)ammonium 4-chlorophenylsulfanylacetate H+N(CH2CH2OH)(3) center dot (-OOCCH2SC6H4Cl-4) (1) with zinc or nickel chloride in a ratio of 2:1 affords stable at room temperature powder-like adducts [H+N(CH2CH2OH)(3)](2) center dot [M(OOCCH2SC6H4Cl-4)(2)Cl-2](2-), M = Zn (2), Ni (3). By recrystallization from aqueous alcohol compound 2 unexpectedly gives Zn(OOCCH2SC6H4Cl-4)(2) center dot 2H(2)O (4). Unlike 2, compound 3 gives crystals [N(CH2CH2OH)(3)](2)Ni2+ center dot [-OOCCH2SC6H4Cl-4](2) (5), which have a structure of metallated ionic liquid. The structure of 5 has been proved by X-ray diffraction analysis. It is the first example of the conversion of a protic ionic liquid into potentially biological active metallated ionic liquid (1 -> 3 -> 5).