Volatile fluorinated trimethylplatinum(IV) β-diketonates: Synthesis, properties, and structure

Stable volatile fluorinated trimethylplatinum(IV) β-diketonates: [(CH3)3Pt(CF3–CO–CH–CO–CF3)H2O], (CH3)3Pt(hfac)H2O (1); [(CH3)3Pt(CF3–CO–CH–CO–CH3)H2O], (CH3)3Pt(tfac)H2O (2); [(CH3)3Pt(CF3–CO–CH–CO–C(CH3)3H2O], (CH3)3Pt(ptac)H2O (3) were synthesized with the yield of 92–95%. The obtained compounds were identified by elemental analysis, 1H and 13C NMR, IR-spectroscopy. Crystal structure and thermal properties were studied. In compounds 1, 2, and 3, the coordination Pt polyhedron is a slightly distorted PtC3O3 octahedron formed by three methyl groups, water molecule, and two oxygen atoms of the bidentate ligand. The Pt–CMe, Pt–OL, and Pt–OW bond lengths and the chelate O–Pt–O angle values are within 1.86–2.16, 2.04–2.27, and 2.23–2.30 Å and 87.8–88.9°, respectively, in all complexes. The complexes are not sensitive to oxygen and moisture and stable for a long time upon storage.

Stable volatile trimethylplatinum(IV) β-diketonates of general formulae (CH3)3PtLFH2O, where LF = fluorinated β-diketonate: hexafluoroacetylacetonate (hfac), trifluoroacetylacetonate (tfac), and pivaloyltrifluoracetonate (ptac) have been synthesized with high yield and identified by the elemental analysis, 1H and 13C NMR, IR spectroscopy. Structure of the compounds was established by X-ray analysis. Investigation of thermal behavior of the reported compounds both in solid phase and in vapor phase has been performed.Figure optionsDownload as PowerPoint slide