Rational, Facile Synthesis and Characterization of the Neutral Mixed‐Metal Organometallic Oxides Cp*2MoxW6–xO17 (Cp* = C5Me5, x = 0, 2, 4, 6) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue European Journal of Inorganic Chemistry Année : 2009

Rational, Facile Synthesis and Characterization of the Neutral Mixed‐Metal Organometallic Oxides Cp*2MoxW6–xO17 (Cp* = C5Me5, x = 0, 2, 4, 6)

Résumé

The reaction of the bis(pentamethylcyclopentadienyl)pentaoxidodimetal complexes Cp*2M2O5 with four equivalents of Na2M′O4 (M, M′ = Mo, W) in acidic aqueous medium constitutes a soft and selective entry into neutral Lindqvist‐type organometallic mixed‐metal oxides Cp*2MoxW6–xO17 [x = 6 (1), 4 (2), 2 (3), 0 (4)]. The identity of the complexes is demonstrated by elemental analyses, thermogravimetric analyses and infrared spectroscopy. Thermal degradation of 1–4 up to above 500 °C leads to Mox/6W1–x/6O3. The molecular identity and geometry of compound 2 is further confirmed by a fit of the powder X‐ray diffraction pattern with a model obtained from previously reported single‐crystal X‐ray structures of 1 and 4, with which 2 is isomorphous. DFT calculations on models obtained by replacing Cp* with Cp (I–IV) validate the structural assignments and assist in the assignment of the M,M′–O vibrations.
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hal-03184169 , version 1 (29-03-2021)

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Gülnur Taban-Çalişkan, Dominique Agustin, Funda Demirhan, Laure Vendier, Rinaldo Poli. Rational, Facile Synthesis and Characterization of the Neutral Mixed‐Metal Organometallic Oxides Cp*2MoxW6–xO17 (Cp* = C5Me5, x = 0, 2, 4, 6). European Journal of Inorganic Chemistry, 2009, 2009 (34), pp.5219-5226. ⟨10.1002/ejic.200900676⟩. ⟨hal-03184169⟩
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