Metathesis of allyl-functionalized (chiral) salen complexes under mild conditions affords their polynuclear analogues. A successful route towards various bimetallic complexes and a step-wise preparation of a macrocyclic, tetrametallic structure are reported.
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![Access to multinuclear salen complexes using olefin metathesis](https://www.iciq.org/wp-content/uploads/2014/03/Access-to-multinuclear-salen_3352.gif)