کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1337979 | 979656 | 2012 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Carbon–phosphorus triple bond formation through multiple bond metathesis of an anionic niobium phosphide with carbon dioxide Carbon–phosphorus triple bond formation through multiple bond metathesis of an anionic niobium phosphide with carbon dioxide](/preview/png/1337979.png)
A novel borane-capped niobium phosphide anion ([B(C6F5)3-1]) has been prepared in 87% yield by reaction of [PNb(N[Np]Ar)3]− (1, Ar = 3,5-C6H3Me2 and Np = neopentyl) with the Lewis acidic borane B(C6F5)3. Room-temperature reaction of this adduct with carbon dioxide readily yields the OCP− ion 3, isolated as its sodium salt, [Na(dme)2][OCP] (dme = dimethoxyethane), in 70% yield, with concomitant formation of a borane-substituted niobium oxo complex [B(C6F5)3-2] (2 = ONb(N[Np]Ar)3).
The niobium phosphide anion complex [PNb(N[Np]Ar)3]−, where Np = neopentyl and Ar = 3,5-C6H3Me2, was converted to its fluorinated borane adduct, [(F5C6)3BPNb(N[Np]Ar)3]−. Upon reaction of the latter anion with CO2, formation of phosphaethynolate, [OCP]−, was confirmed, together with formation of borane-capped niobium oxo, (F5C6)3BONb(N[Np]Ar)3.Figure optionsDownload as PowerPoint slideHighlights
► A niobium phosphide anion complex was complexed with perfluorotriphenylborane.
► Carbon dioxide was transformed into the sodium salt of phosphaethynolate.
► Sodium phosphaethynolate was formed in good yield and isolated in pure form.
Journal: Polyhedron - Volume 32, Issue 1, 20 January 2012, Pages 10–13