Metal-Templated Ligand Architectures for Trinuclear Chemistry: Tricopper Complexes and Their O2 Reactivity.
作者： Davide Lionetti , Michael W. Day , Theodor Agapie
DOI: 10.1039/C2SC21758A
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摘要: A trinucleating framework was assembled by templation of a heptadentate ligand around yttrium and lanthanides. The generated complexes orient three sets two or N-donors each for binding additional metal centers. Addition equivalents copper(I) leads to the formation tricopper(I) species. Reactions with dioxygen at low temperatures generate species whose spectroscopic features are consistent μ3,μ3-dioxo-tricopper complex. Reactivity studies were performed variety substrates. dioxo-tricopper deprotonates weak acids, undergoes oxygen atom transfer triphenylphosphine yield oxide, performs hydrogen abstraction from tetramethylpiperidine-N-hydroxide (TEMPO-H). Thiophenols reduce oxygenated Cu3I complex liberate disulfide, four-electron four-proton process.
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