Décomposition thermique des complexes anhydres triflato d'yttrium et d'ytterbium

Abstract Reaction of lanthanides oxides (Ln 2 O 3 (Ln = Y and Yb)) with aqueous triflic acid (CF 3 SO 3 H) followed by thermal dehydration under vacuum yields anhydrous complexes Ln(OTf) 3 . IR and Raman vibration spectroscopies and chemical analysis indicate that [ OTf ] is tridentate bridging and that the metallic center (Ln) is nine-coordinated. Decomposition at high temperature, followed by mass, X-ray powder diffraction and mass spectrometry, leads to fluorides LnF 3 .