Modular Trimethylene-Linked Bisimidazol(in)ium Salts

[摘要]：A short and modular synthesis of symmetrically and non-symmetrically substituted bisimidazolinylene N-heterocyclic carbene precursors is described. Two methods to establish dicopper(I) complexes of these compounds depending on the steric shielding of the carbene are reported.

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