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Camilo J. Viasus Bulat Gabidullin Sandro Gambarotta 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(42):15029-15032
The second case of linear end‐on and evidence for an unprecedented bridging end‐on coordination mode of CO2 have been discovered for vanadium aryloxide complexes of the tetradentate ligand system (ONNO)2? (ONNO=2,4‐Me2‐2‐(OH) C6H2CH2]2N(CH2)2NMe2). The reaction of divalent (ONNO)VII (TMEDA) with CO2 and under the appropriate reaction conditions affords the trivalent (ONNO)VIII(OH)(η1‐CO2) resulting from an intermediate CO2 deoxygenation pathway followed by H‐atom abstraction from the aromatic solvent, and CO2 fixation. In contrast, the reduction of trivalent (ONNO)VIIICl(THF) with K, followed by exposure to CO2 in ethereal solvent, afforded the dinuclear [(ONNO)VII]2 (μ,η1‐CO2). 相似文献
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