Cis-Dianion Type Catalysts

Attempts to prevent the release of an inert ligand (Lj) located in the trans 

Although unknown at the time, the reason for the latency of this complex was the fact that it rearranged to afford a cis-dichloro complex, where the neutral ligands also become cis to each other, a geometry that diminishes the metathesis efficiency [15]. 

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