[Ge9{Si(SiMe3)3}3{SnPh3}]: a tetrasubstituted and neutral deltahedral nine-atom cluster.
نویسندگان
چکیده
Reaching neutral territory: The title compound, the first tetrasubstituted deltahedral Zintl cluster, is no longer an ion (see picture; Ge green, Si purple, Sn blue). It is a neutral molecule formed by a reaction of the trisilylated anion with Ph(3) SnCl.
منابع مشابه
Zintl Anions
The chemistry of nine-atom deltahedral Zintl anions of Group 14 has advanced greatly in recent years. Redox reactions of these clusters have led to dimers, trimers, tetramers, and infinite chains of germanium clusters such as [Ge9-Ge9] 6 , [Ge9=Ge9=Ge9] 6 , [Ge9=Ge9=Ge9=Ge9] 8 , 1[-(Ge9) 2 -], and 1[-(HgGe9) 2 -]. Similar redox reactions combined with nucleophilic addition of various anions hav...
متن کاملRational synthesis of [Ge9{Si(SiMe3)3}3]- from its parent Zintl ion Ge9(4-).
Reported is the first rational synthesis of a trisubstituted deltahedral Zintl ion, [Ge(9){Si(SiMe(3))(3)}(3)](-) in this case, by the addition of the three substituents in a reaction of the parent naked deltahedral Zintl ion Ge(9)(4-) with {(Me(3)Si)(3)Si}Cl. The new species were crystallized and structurally characterized in [K(2,2,2-crypt)](2)[Ge(9){Si(SiMe(3))(3)}(3)] (monoclinic, P2(1)/c, ...
متن کاملAlkylation of Deltahedral Zintl clusters: synthesis of [R-Ge9-Ge9-R]4- (R = tBu, sBu, nBu, tAm and structure of [tBu-Ge9-Ge9-tBu]4-.
Reactions of nine-atom deltahedral clusters (Zintl ions) of germanium, Ge9n- (n = 2, 3, 4), with alkyl chlorides, RCl (R = tBu, nBu, sBu, tAm), yielded the corresponding dialkylated dimers of Ge9 clusters [R-Ge9-Ge9-R]4-. The tBu derivative with [K(2,2,2-crypt)]+ countercations was characterized in the solid state by single-crystal X-ray diffraction as [K(2,2,2-crypt)]4[tBu-Ge9-Ge9-tBu].7en (mo...
متن کاملUV photoexcitation of a dissolved metalloid Ge9 cluster compound and its extensive ultrafast response.
Femtosecond pump-probe absorption spectroscopy in tetrahydrofuran solution has been used to investigate the dynamics of a metalloid cluster compound {Ge9[Si(SiMe3)3]3}(-). Upon UV photoexcitation, the transients in the near-infrared spectral region showed signatures reminiscent of excess electrons in THF (bound or quasi-free) whereas in the visible part excited state dynamics of the cluster com...
متن کاملDerivatization of deltahedral Zintl ions by nucleophilic addition: [Ph-Ge9-SbPh2]2- and [Ph2Sb-Ge9-Ge9-SbPh2]4-.
The type of the reactions of addition of exo-bonded groups to deltahedral Zintl ions such as Ge9(n-) has been established as addition of anionic nucleophiles. Various nucleophiles such as Ph2Bi-, Ph2Sb-, Ph- interact with the relatively low-lying LUMO of Ge9(2-) and/or the half filled HOMO of Ge9(3-) and bond to the clusters. The title anions, characterized in their (K-crypt) salts where crypt ...
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ورودعنوان ژورنال:
- Angewandte Chemie
دوره 51 34 شماره
صفحات -
تاریخ انتشار 2012