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Formation of binary alloy cluster ions from group‐14 elements and cobalt and comparison with solid‐state alloys
Author(s) -
Zhang Xia,
Li Guoliang,
Xing Xiaopeng,
Zhao Xiang,
Tang Zichao,
Gao Zhen
Publication year - 2001
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.530
Subject(s) - chemistry , cobalt , alloy , cluster (spacecraft) , group (periodic table) , solid state , ion , binary number , inorganic chemistry , organic chemistry , computer science , programming language , arithmetic , mathematics
Abstract By using laser ablation on mixtures of transition metal cobalt and group‐14 elements, binary alloy cluster anions were produced while no binary alloy cluster cations were detected, and the homocluster cations of group‐14 elements appeared at very low abundance. The differences between clustering abilities of germanium, tin and lead with cobalt are described, and the chemical bonds in the binary alloy cluster anions appear to indicate a transition from covalent to metal bonds. The cluster anion [CoPb 10 ] − appears in very high abundance (magic number), and an endohedral structure is proposed for this cluster. The cluster anion [CoPb 12 ] − , also representing a magic number, probably has an icosahedral structure. Compared with solid‐state Co/Ge binary alloys, the compositions of most binary alloy cluster anions are germanium‐rich, in which the covalent bonds are predominant. Copyright © 2001 John Wiley & Sons, Ltd.