Highly efficient synthesis of mononuclear Pt-based carboxylic complexes trans-[Py2Pt(OC(O)R)2] (R = Me, But, Ph)

Two novel synthetic routes were suggested for square-planar carboxylic platinum(ii) complexes with acetic, pivalic, and benzoic ligands. In the first method, heating ionic complex [Py4Pt](OAc)2 under reduced pressure gives a molecular compound trans-[Py2Pt(OAc)2] with a moderate yield. In the second method, the same starting compound [Py4Pt](OAc)2 ∙ 6 H2O is melted with pivalic or benzoic acids, which leads to analogous carboxylic trans-complexes with almost quantitative yields. © 2024