Fluorenylidene-Functionalized Lithium Phosphonium Di- and Triylides
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https://figshare.com/articles/dataset/Fluorenylidene_Functionalized_Lithium_Phosphonium_Di_and_Triylides/2183941
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The 9-fluorenylidene phosphorane Me3PFlu (2) is easily accessible by deprotonation of [Me3P+–FluH]Br– (1). Its selective deprotonation in diethyl ether yielded the phosphonium di- and triylides [(Et2O)Li{CH2–PMe2–Flu}]2 (3) and [(Et2O)Li2{(CH2)2PMe–Flu}]2 (4), respectively. Both complexes crystallize as dimers, exhibiting bridging ylidic methylene fragments. Moreover, the fluorenylidene moieties also act as soft ligands in the vicinity of lithium.
创建时间：
2016-02-14
