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Thermal treatment of the pyridyl side-chain-functionalized cyclopentadienes with Fe(CO) 5 and Ru 3 (CO) 12 gave different intramolecular C−H activated products, in addition to the normal dinuclear metal complexes. Reactions of the dinuclear metal complexes with I 2 also gave different metal iodide complexes.
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Chen et al. (2005) studied this question.
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