Reactivity of some "ladder" type complexes under conditions of metallationстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The behavior of binuclear "ladder" type complexes FpL, where Fp = Cp(CO)(2)Fe, L = p-MeC6H4Cr(CO)(3) (4), CH2C6H5Cr(CO)(3) (5), and p-FpC(6)H(4)Cr(CO)(3) (6), under conditions of metallation was studied. Unlike compounds 5 and 6, the sigma-bound ligand L in compound 4 migrates from the iron atom to the cyclopentadienyl ring to give complexes Me(CO)(2)FeC5H4-C6H4(p-Me)Cr(CO)(3). The electrochemical reduction potentials of the complexes 4-6 and the rearrangement products were measured. The migration activity of L is determined by the ease of reductive cleavage of the Fe-L bond and the susceptibility of the system to undergo intramolecular electron transfer from the Cp ligand to the aromatic ring.