Abstract
Unlike isoelectronic η6-indenyl ruthenium, manganese, and chromium complexes, heating of Mn(CO)5OTf, [Ru(Cp*)Cl4], and Cr(C10H8)(CO)3 with isomeric 2-ethyl-5-methylcyclopenta[b]thiophenes leads to the corresponding η5-complexes where the metal is coordinated at the C5-carbocycle. The structure of the complex Mn(Th)(CO)3 (Th = 2-ethyl-5-methylcyclopenta[b]thienyl) was proved by X-ray analysis.
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Kisun'ko, D.A., Zabalov, M.V., Oprunenko, Y.F. et al. Cyclopenta[b]thienyl Ligand in Organometallic Chemistry. Synthesis of Cyclopenta[b]thiophene η5-Complexes with Metal Coordination at the Thiophene Ring. Russian Journal of General Chemistry 74, 105–109 (2004). https://doi.org/10.1023/B:RUGC.0000025177.78155.a1
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DOI: https://doi.org/10.1023/B:RUGC.0000025177.78155.a1