Reactions of alkali metal derivatives of metal carbonyls. VI. Some reactions of anions prepared from indenylmolybdenum tricarbonyl dimer and azulenedimolybdenum hexacarbonyl

Article abstract of DOI:10.1021/ic50026a009

Indenylmolybdenum tricarbonyl dimer, [C₉H₇Mo(CO)₃]₂, is reduced by sodium amalgam in tetrahydrofuran to give a brown solution containing the [C₉H₇Mo(CO)₂]^- anion. This solution reacts with methyl iodide to form the expected yellow-orange tricarbonyl CH₃Mo(CO)₃C₉H₇. However, allyl chloride and chloromethyl methyl sulfide react with the [C₉H₇Mo(CO)₃]^- anion in tetrahydrofuran solution at room temperature to form the yellow dicarbonyls π-C₃H₅Mo(CO)₂-C₉H₇ and π-CH₃SCH₂Mo(CO)₂C₉H₇, respectively, in unusually facile decarbonylation reactions. Treatment of [C₉H₇Mo-(CO)₃]₂ with iodine in dichloromethane solution gives a brown dicarbonyl iodide C₉H₇Mo(CO)₂I rather than the expected tricarbonyl iodide. Azulenedimolybdenum hexacarbonyl, C₁₀H₈Mo₂(CO)₆, reacts with sodium amalgam in tetrahydrofuran to give a yellow-brown solution which gives yellow dimeric [C₁₀H₈Mo(CO)₃CH₃]₂ on treatment with methyl iodide.