类金属簇[AgSn]的形成——货币金属NHC化合物与[Sn]的反应活性
Formation of the intermetalloid cluster [AgSn] - the reactivity of coinage metal NHC compounds towards [Sn].
作者信息
Geitner F S, Klein W, Fässler T F
机构信息
WACKER-Institute for Silicon Chemistry and Department of Chemistry, Technische Universität München Lichtenbergstraße 4, 85747 Garching/München, Germany.
出版信息
Dalton Trans. 2017 May 9;46(18):5796-5800. doi: 10.1039/c7dt00754j.
In recent years the formation of intermetalloid clusters by reacting homoatomic tetrel cluster anions with transition metal complexes has become a promising synthetic route. Nevertheless a better understanding of the processes occurring in solution is necessary. Here we present a series of novel polyanionic coinage metal NHC Zintl clusters [NHCM(η-Sn)] (M: Cu, Ag, Au; Dipp: diisopropylphenyl) which are obtained at low temperatures from the reaction of KSn with NHCMCl (M: Cu-Au) in liquid ammonia. For M = Ag a larger intermetalloid Ag-bridged nonastannide dimer [(η-Sn)Ag(η-Sn)] is also formed. The stepwise formation of the intermetalloid cluster [AgSn] is discussed and compared with that of previously reported intermetalloid stannides.
近年来，通过将同原子四族簇阴离子与过渡金属配合物反应来形成类金属间化合物簇已成为一条很有前景的合成路线。然而，有必要更好地理解溶液中发生的过程。在此，我们展示了一系列新型的聚阴离子贵金属NHC 津特耳簇[NHCM(η-Sn)]（M：Cu、Ag、Au；Dipp：二异丙基苯基），它们是在低温下由KSn与NHCMCl（M：Cu - Au）在液氨中反应得到的。对于M = Ag，还形成了一个更大的类金属间化合物Ag桥连的九锡化物二聚体[(η-Sn)Ag(η-Sn)]。讨论了类金属间化合物簇[AgSn]的逐步形成过程，并与先前报道的类金属间化合物锡化物的形成过程进行了比较。
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