Formation and Characterization of Gaseous Adducts of Carbon Dioxide to Magnesium, (CO2)MgX− (X=OH, Cl, Br)

Formation and Characterization of Gaseous Adducts of Carbon Dioxide to Magnesium, (CO2)MgX− (X=OH, Cl, Br):

A good fix: The structure and chemical reactivity of a reduced form of CO₂ bonded to magnesium, XMg(η²-O₂C)⁻, is reported. Upon reaction with water it loses CO, while it adds CH₃ upon reaction with alkyl halides, thereby signifying nucleophilicity of the carbon atom in XMg(η²-O₂C)⁻ in S_N2 reactions.