One-Pot Synthesis of Symmetric and Asymmetric <i>p</i>-Quinone Ligands and Unprecedented Substituent Induced Reactivity in Their Dinuclear Ruthenium Complexes
result in the formation of complexes [Cl(η6-Cym)Ru}2(μ-L−2H1)] (1), [Cl(η6-Cym)Ru}2(μ-L−2H2)] (2), [Cl(η6-Cym)Ru}2(μ-L−2H3)] (3), and [Cl(η6-Cym)Ru}2(μ-L−2H4)] (4). Structuralcharacterization of 2 and 4 shows a rare syn-coordination of the chloride atoms. The SMe groups in 3 and 4 are not coordinated to the ruthenium center, and the bridging ligands thus function in a bis-bidentate form. Abstraction
Substituent-Induced Reactivity in Quinonoid-Bridged Dinuclear Complexes: Comparison between the Ruthenium and Osmium Systems
作者:Michael G. Sommer、David Schweinfurth、Fritz Weisser、Stephan Hohloch、Biprajit Sarkar
DOI:10.1021/om300939x
日期:2013.4.8
with the bridgingligand coordinating to the metal center in a bis-meridional form. The coordination mode of L-2H in 22+ was confirmed by single-crystal X-ray diffraction data. A structural analysis of 22+ reveals localization of double bonds within the “upper” and “lower” parts of the bridgingligand in comparison to bond distances in the free ligand. Additionally, the binding of the bridge to the osmium