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do eta-4 benzene ligands participate in Diels Alder or other cycloadditions?

do eta-4 benzene ligands participate in Diels Alder or other cycloadditions?

Grade:8

1 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
7 years ago
Benzene can also be a polyhaptic ligand, formingη4orη6complexes depending on the oxidation state of the metal. In particular, bis(benzene)ruthenium complexes can undergo redox shuttling, where one benzene ligand switches betweenη4andη6.
n theη4complex on the right, the top benzene ligand is now bent out of planarity, implying a break of aromaticity. This compound looks like a good dienophile for aDiels-Alder reaction204-543_pPnWU.png

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