摘要:
The stoichiometric reaction of 1 equiv of CO with [(U(eta-C(8)H(6){Si(i)Pr(3)-1,4}(2)) (eta-Cp(*))] affords the linear diuranium ynediolate complex [(U(eta-C(8)H(6){Si(i)Pr(3)-1,4}(2)(eta-Cp(*))](2)(mu-eta(1):eta(1)-C(2)O(2)) which does not react with further CO to give the deltate derivative [(U(eta-C(8)H(6){Si(i)Pr(3)-1,4}(2))(eta-Cp(*))](2)(mu-eta(1):eta(2)-C(3)O(3)). Spectroscopic and computational studies suggest a plausible mechanism for the formation of the deltate complex, in which a "zig-zag" diuranium ynediolate species is the key intermediate.