Direct Access to Palladium(II) Complexes Based on Anionic <i>C</i>,<i>C</i>,<i>C</i>-Phosphonium Ylide Core Pincer Ligand
نویسندگان
چکیده
The reaction of readily available imidazolium–phosphonium salt [MesIm(CH2)3PPh3](OTf)2 with PdCl2 in the presence an excess Cs2CO3 afforded selectively one step cationic Pd(II) complex [(C,C,C)Pd(NCMe)](OTf) exhibiting LX2-type NHC-ylide-aryl C,C,C-pincer ligand via formal triple C–H bond activation. replacement labile MeCN latter by CNtBu and CO fragments allowed to estimate overall electronic properties this phosphonium ylide core pincer scaffold incorporating three different carbon-based donor ends IR spectroscopy, cyclic voltammetry, molecular orbital analysis, revealing its significantly higher electron-rich character compared structurally close NHC system two extremities. [(C,C,C)Pd(CO)](OTf) represents a rare example carbonyl species stable at room temperature characterized X-ray diffraction analysis. treatment isostructural complexes (allyl)MgBr nBuLi led formation zwitterionic organopalladates [(C,C,C)PdBr] [(C,C,C)Pd(COnBu)], respectively.
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ژورنال
عنوان ژورنال: Inorganic Chemistry
سال: 2021
ISSN: ['0020-1669', '1520-510X']
DOI: https://doi.org/10.1021/acs.inorgchem.1c01316