Synthesis of new half sandwich tetrachloro derivatives of molybdenum(V) and tungsten(V). X-ray structures of (C5HPri4)W(CO)3(CH3) and (C5Et5)WCl4 - Université de Bourgogne Accéder directement au contenu
Article Dans Une Revue Journal of Organometallic Chemistry Année : 2002

Synthesis of new half sandwich tetrachloro derivatives of molybdenum(V) and tungsten(V). X-ray structures of (C5HPri4)W(CO)3(CH3) and (C5Et5)WCl4

Résumé

The new synthetic intermediates (Ring)MCl4 [Ring=C5HPri4 or 4Cp, M=Mo, 2; Ring=C5Et5 or VCp, M=W, 4, Ring=4Cp, M=W, 6] containing sterically protecting cyclopentadienyl ligands have been synthesized. Along the synthetic pathway to 2, it was found that the treatment of [4CpMo(CO)3]− with an aqueous ferric solution according to the well established Manning procedure affords the hydride compound 4CpMo(CO)3H (1) by hydrolysis rather than the expected neutral dimer by oxidation. Compound 1 could be converted, however, to 2 upon oxidation with PhICl2 in good yields. Compound 4 is shown by a single crystal X-ray analysis to adopt a monomeric four-legged piano stool structure. The precursors to compounds 4 and 6, (Ring)W(CO)3(CH3) (Ring=VCp, 3; 4Cp, 5) have also been characterized, including an X-ray structure for 5.
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hal-03284170 , version 1 (20-07-2021)

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Matthias Bastian, Dolores Morales, Rinaldo Poli, Philippe Richard, Helmut Sitzmann. Synthesis of new half sandwich tetrachloro derivatives of molybdenum(V) and tungsten(V). X-ray structures of (C5HPri4)W(CO)3(CH3) and (C5Et5)WCl4. Journal of Organometallic Chemistry, 2002, 654 (1-2), pp.109-116. ⟨10.1016/S0022-328X(02)01392-X⟩. ⟨hal-03284170⟩
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