Synthesis and Redox Chemistry of a Tantalum Alkylidene Complex Bearing a Metallaimidazole Ring
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https://figshare.com/articles/dataset/Synthesis_and_Redox_Chemistry_of_a_Tantalum_Alkylidene_Complex_Bearing_a_Metallaimidazole_Ring/5328322
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资源简介:
The
cyclometalated tantalum(V) terminal hydride complex {ArNC(Me)CHC(Me)N[2-(CHMeCH2)-6-iPr-C6H3]}(η2-N(Xyl)CH)Ta(NtBu) reacts cleanly with 2 equiv of 2,6-dimethylphenyl isocyanide
via migratory insertion to give a product containing a unique metallaimidazole
ring. This complex can be reversibly oxidized by one electron, either
electrochemically or chemically, to give a tantalum radical cation
species. DFT calculations, as well as X-ray crystallographic and EPR
spectroscopic data, are consistent with the electron being removed
from an orbital primarily composed of Ta–C π-bonding
character but also delocalized over the tantalaimidazole ring.
创建时间:
2017-09-06



