Synthesis and Structural Characterization of Base-Stabilized Oligomeric Heterovinylidenes
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摘要Metalation of the (iminophosphoranyl)phosphine PPh2CH2(PPh2=NSiMe3) (1) with an equimolar amount of n-BuLi afforded the monolithium salt [Li{CH(PPh2)(PPh2=NSiMe3)}(THF)(2)] (2). The reaction of 2 with GeCl2 center dot 1,4-dioxane has led to the formation of a germavinylene moiety, which trimerized to form a new heterocyclic cage compound, [{(PPh2=NSiMe3)(PPh2)C=Ge:}{(PPh2= NSiMe3)(PPh2)C}(2)Ge -> Ge:] (3). A similar reaction of the lithium methanide complex 2 with SnCl2 afforded the stannavinylidene moiety, which underwent a "head-to-tail" cycloaddition to form a stable 1,3-clistannacyclobutane, 4. A trapping reaction of 4 with diiron nonacarbonyl gave the novel iron stannavinylidene complex S. The solid-state structure analysis of 5 reveals that it contains two stannavinylidene moieties bonded in a Sn-P "head-to-tail" fashion, with one of the tin(II) centers coordinating to a Fe(CO)(4) moiety. The X-ray structures of 2-5 have been determined by X-ray crystallography. In addition, the dynamic behavior of 5 has been studied by means of variable-temperature P-31 and Sn-119 NMR spectroscopy.
著者Leung WP, Chiu WK, Mak TCW
期刊名稱Inorganic Chemistry
出版年份2013
月份8
日期19
卷號52
期次16
出版社American Chemical Society
頁次9479 - 9486
國際標準期刊號0020-1669
電子國際標準期刊號1520-510X
語言英式英語
Web of Science 學科類別Chemistry; Chemistry, Inorganic & Nuclear; CHEMISTRY, INORGANIC & NUCLEAR

上次更新時間 2020-27-10 於 00:43