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The reaction of sodium [NN′-ethylenebis(salicylideneiminato)cobaltate(I)] with carbon dioxide in both tetrahydrofuran and pyridine gave the reversible adducts: Co(salen)CO2Na and (py)Co(salen)CO2Na, respectively, containing CO2 as the reduced species and in bent form.
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Floriani et al. (1974) studied this question.
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