TITLE

The formation, photodissociation, and bond structure of cobalt–sulfur cluster ions

AUTHOR(S)
Shi, Yang; Zhang, Nan; Gao, Zhen; Kong, Fanao; Zhu, Qihe
PUB. DATE
December 1994
SOURCE
Journal of Chemical Physics;12/1/1994, Vol. 101 Issue 11, p9528
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The formation and photodissociation of cobalt–sulfur cluster ions (ConS+m) produced by laser ablation on a tablet of well-mixed cobalt and sulfur powder were studied with a home-built tandem time-of-flight (TOF) mass spectrometer. In the mass spectrum, there are many intense peaks of more stable cluster ions ConS+m signified as follows: n=2–5,7, m=n-1; n=6,8–11, m=n-2; n=12–13, m=n-3; n=14–16, m=n-4. The photolysis of the mass-selected cluster ions was performed with a 248 nm excimer laser. The dissociation patterns support the above composition results. Previous theories about clusters do not explain the experimental results. A relationship between the electron number and orbital number of more stable clusters was recognized. Ab initio calculations were performed on two small cluster ions to determine stable geometries. © 1994 American Institute of Physics.
ACCESSION #
7610408

 

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