Reactivity of U–E–U (E = S, Se) Toward CO₂, CS₂, and COS: New Mixed-Carbonate Complexes of the Types U–CO₂E–U (E = S, Se), U–CS₂E–U (E = O, Se), and U–COSSe–U

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Abstract

We recently reported the formation of a bridging carbonate complex [{(((Ad)ArO)(3)N)U}(2)(μ-η(1):κ(2)-CO(3))] via reductive cleavage of CO(2), yielding a μ-oxo bridged complex, followed by the insertion of another molecule of CO(2). In a similar strategy, we were able to isolate and characterize a series of mixed carbonate complexes U-CO(2)E-U, U-CS(2)E-U, and even U-OC(S)Se-U, by reacting bridged chalcogenide complexes [{(((Ad)ArO)(3)N)U}(2)(μ-E)] (E = S, Se) with CO(2), CS(2), and COS. These chalcogenido mixed-carbonate complexes represent the first of their kind.

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