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A large number of the isomers of neutral and ionic Snn(n=2–15) clusters have been designed and optimized at the level of MP2/LANL2DZ with the aid of the Gaussian 09 software package. The most stable geometric structures of ionic(cationic and anionic) Sn clusters have been compared with the corresponding neutral geometries. Most structures of Snn+ and Snn are similar to each other except for...
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