Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA.
Angew Chem Int Ed Engl. 2016 Jun 1;55(23):6721-4. doi: 10.1002/anie.201602837. Epub 2016 Apr 21.
The title anion was synthesized by heating dimethylformamide (DMF) solution of the known Ni-centered and Ni(CO)-capped tin clusters Ni@Sn9 Ni(CO) . The new anion represents the first example of face-fused nine-atom molecular clusters. The two clusters are identical elongated tricapped trigonal prisms of nido-Sn8 Ni(CO) with nickel at one of the capping positions. They are fused along a triangular face adjacent to a trigonal prismatic base and made of two Sn and one Ni atoms. The new anion is structurally characterized by single-crystal X-ray diffraction in the compound (K[222-crypt])4 [Sn14 Ni(CO)]⋅DMF. Its presence in solution is corroborated by electrospray mass spectrometry.
标题阴离子是通过加热已知的镍中心和镍（CO）封端的锡簇[Ni@Sn9 Ni（CO）]（3-）的二甲基甲酰胺（DMF）溶液合成的。新的阴离子代表第一个面融合的九原子分子簇的例子。这两个簇是相同的拉长的三帽三角棱柱[nido-[Sn8 Ni（CO）]（6-）]，镍位于一个封端位置。它们沿着与三角棱柱基底相邻的三角形面融合，由两个 Sn 和一个 Ni 原子组成。新的阴离子通过在化合物（K[222-穴醚]）4 [Sn14 Ni（CO）]⋅DMF 中的单晶 X 射线衍射进行结构表征。通过电喷雾质谱证实了其在溶液中的存在。
