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Submitted on: 09 March 2000.
Revised on: 30 March 2000.
Accepted on: 21 May 2000.
___________________CHINESE JOURNAL OF INORGANIC CHEMISTRY
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Submitted on: 16 August 2013.
Revised on: 10 September 2013.
Accepted on: 30 October 2013.
___________________CHINESE JOURNAL OF INORGANIC CHEMISTRY
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