期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 11, 页码 3616-3619出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201812989
关键词
catechols; diradicals; hypercoordination; redox-active substituents; silanes
资金
- FCI
- DFG
The reaction of ortho-quinones with silicon tetraiodide leads to neutral silicon trisdioxolenes in high yield, delivering the unknown oxidized form of triscatecholatosilicate dianions and the first example of open-shell semiquinonates connected via a single non-metal center. Silicon tris(perchloro)dioxolene is a stable diradical with a triplet ground state, as supported by X-ray diffraction; IR, resonance Raman, UV/Vis, and (VT)EPR spectroscopy; and Kohn-Sham broken-symmetry computations. Preliminary results suggest that the preferred magnetic ground state can be altered through variation of the substituents.
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