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The authors thank the National Natural Science Foun-
dation of China (Nos. 20225206, 20390055, and
20372050), the Ministry of Education of China (No.
104209 and others) and Sichuan University (No.
2004CF07), for financial support.
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22. IR spectra shows that when TMSCN and TMG
was mixed, the N–H and C@N peak of TMG were shifted
from 3334.0 and 1596 cmꢀ1 to 3282 and 1562 cmꢀ1
respectively.
,