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Citation: Liu Jian-Bo, Han Chun-Ying, Zeng Rong, Gao Zhen, Zhu Qi-He. Formation,Photodissociation and Structures of Si,Sn,Pb/P Binary Atomic Cluster lons[J]. Acta Physico-Chimica Sinica, ;1999, 15(10): 883-889. doi: 10.3866/PKU.WHXB19991005 shu

Formation,Photodissociation and Structures of Si,Sn,Pb/P Binary Atomic Cluster lons

1.
State Key Laboratory of Molecular Reaction Dynamics,Institute of Chemistry,Beijing 100080

Received Date: 5 January 1999
Available Online: 15 October 1999

The formation and photodissociation of group Ⅳ(Si,Ge,Sn,Pb)/P binary cluster ions ,produced by laser ablation, were studied with a tandem TOF mass spectrometer. The stability of these cluster ions is influenced by their electronic and geometric structures ,and the geometric stability becomes more important for heavier group Ⅳ/P cluster ions. Two types of binary clusters marked with the magic numbers were observed: one type of magic clusters may be explained by the Wade's rule, in which P atom either attaches as electron-donating ligand to the closo-skeleton of group Ⅳatoms, or joins the closo-skeleton directly; another type of magic clusters are isoelectronic with magic species of neutral group Ⅳclusters or P clusters. The possible structures of magic cluster ions were studied by ab initio calculation and the Wade's rule.
- Binary atomic clusters,
- Laser ablstion,
- Laser photodissociation,
- TOF mass spectrometer,
- Wades rule
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