Syntheses, structures, and electrochemical properties of iron(II) and ruthenium(IV)-hydrido complexes with ferrocenylsilyl ligand(s)

Add time:08/06/2019    Source:sciencedirect.com

An iron methyl complex Cp*(CO)2Fe(Me) reacts with silylferrocene HSiR2Fc (Fc = C5H4FeC5H5, R = Me, Ph) to afford the iron complex with a ferrocenylsilyl ligand, Cp*(CO)2Fe(SiR2Fc) (R = Me: 1, Ph: 2). On the other hand, the reactions of a ruthenium methyl complex Cp*(CO)(py)Ru(Me) with 2 equiv of silylferrocene HSiR2Fc (R = Me, Ph) afford the ruthenium(IV) hydrido complexes with two ferrocenylsilyl ligands, Cp*(CO)Ru(H)(SiR2Fc)2 (R = Me: 3, Ph: 4). Complexes 1–4 were fully characterized using 1H and 13C{1H} NMR measurements, elemental analyses, and these structures were determined by X-ray crystallography. The cyclic voltammograms of 3 and 4 showed two well-resolved reversible waves, suggesting electronic communication of two ferrocenyl units through the Ru(IV) center.

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