Coordination studies of polycondensed π-perimeters: mono-, di- and tri-nuclear 
cobalt sandwich complexes of tetracene, benzo[a]pyrene, triphenylene, 
benzo[b]triphenylene and perylene

Schneider, Jörg J.; Wolf, Dirk; Lehmann, C. W.

doi:10.1016/S0020-1693(03)00109-9

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Coordination studies of polycondensed π-perimeters: mono-, di- and tri-nuclear cobalt sandwich complexes of tetracene, benzo[a]pyrene, triphenylene, benzo[b]triphenylene and perylene

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Lehmann, C. W.
Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Zitation

Schneider, J. J., Wolf, D., & Lehmann, C. W. (2003). Coordination studies of polycondensed π-perimeters: mono-, di- and tri-nuclear cobalt sandwich complexes of tetracene, benzo[a]pyrene, triphenylene, benzo[b]triphenylene and perylene. Inorganica Chimica Acta, 350, 625-632. doi:10.1016/S0020-1693(03)00109-9.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-000F-985F-F

Zusammenfassung

By means of arene ligand exchange of the triple deckers [{(η⁵-R_1–5C₅)Co}₂-μ-(η⁴:η⁴-toluene)] (R_1–5=Me, R_1–3=tert-butyl) at room temperature a number of mono-, di-, and tri-nuclear sandwich complexes of the polycondensed aromatics polycyclic aromatic hydrocarbons (PAHs) tetracene, benzo[a]pyrene, perylene, triphenylene and benzo[a]triphenylene have been synthesized. For triphenylene and benzo[b]triphenylene however, a threefold coordination of [(η⁵-C₅Me₅)Co] fragments in the periphery of these PAHs is found, tetracene allows for a twofold coordination of two [(η⁵-C₅Me₅)Co] fragments in the ring periphery leaving a central naphthalene unit of this PAH uncomplexed. Perylene serves as a twofold coordination site for [(η⁵-1,2,4 tri-tert-butyl-C₅H₂)Co] fragments which are coordinated in each of the two naphthalene fragments of this π-perimeter.

Arene ligand exchange of the triple deckers [{(η⁵-R_1–5C₅)Co}₂-μ-(η⁴:η⁴-toluene)] (R_1–5=Me, R_1–3=tert-butyl) under mild conditions with a variety of all benzenoid polycondensed aromatics leads to formation of mono-, di- and tri-nuclear sandwich and tripledecker complexes with bridging polycyclic aromatic hydrocarbons as middle deck.