Cyclo-As₈ as Complex Ligand

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Zusammenfassung

The arsenic analogue of cyclooctatetraenecyclo-As8 can be stabilized as a strongly distorted, puckered eight-membered ring in a complex of niobium (1; each Nb atom also bears a 1,3-di-tert-butylcyclopentadienyl ligand). Complex 1 reacts with [Cr(CO)5(thf)] to form a trinuclear Nb2Cr cluster.