Reactions of Carbon Disulfide and Carbon Dioxide Adducts (eta5-C5H5)(CO) 2Fe-CX2 with Organoiron Electrophiles

Availability of analogous pairs of carbon dioxide 1. and carbon disulfide 2. transition-metal complexes permits comparing structure-bonding and chemical reactivity of these ligated heterocumulenes 3. Such comparisons permit us to address the prevalent but questionable attitude that studying the generally more accessible CS2 adducts affords insight into their less stable (or more labile) CO2 congeners 4. We are interested in one pair of bonded heterocumulene complexes, the Fe(CO)2Cp metallodithiocarboxylates Fp-CS2-(NA+, K+) and metallocarboxylates Fp-CO2(Li+,Na+).