Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/93844
Title: Formation of Di-σ Bond in Benzene Chemisorption on Si(111)-7×7
Authors: Cao, Y.
Wei, X.M. 
Chin, W.S. 
Lai, Y.H. 
Deng, J.F.
Bernasek, S.L.
Xu, G.Q. 
Issue Date: 8-Jul-1999
Source: Cao, Y.,Wei, X.M.,Chin, W.S.,Lai, Y.H.,Deng, J.F.,Bernasek, S.L.,Xu, G.Q. (1999-07-08). Formation of Di-σ Bond in Benzene Chemisorption on Si(111)-7×7. Journal of Physical Chemistry B 103 (27) : 5698-5702. ScholarBank@NUS Repository.
Abstract: The adsorption of benzene on Si(111)-7×7 has been studied using high-resolution electron energy loss spectroscopy (HREELS) and thermal desorption spectroscopy (TDS). Both chemisorbed and physisorbed benzene were observed at an adsorption temperature of 110 K. Chemisorbed benzene desorbs molecularly at 350 and 364 K while physisorbed molecules desorb at 180 K. In the HREELS studies, two separate energy losses at 2920 and 3025 cm-1 were observed for chemisorbed benzene, attributable to the C-H stretching vibrations of sp3 and sp2 carbon atoms, respectively. In addition, the formation of Si-C bond is also evidenced at a vibrational frequency of 540 cm-1. Our results clearly demonstrate that benzene is di-σ bonded to the adjacent adatom and rest atom on Si(111)-7×7, forming a 1,4-cyclohexadiene-like structure.
Source Title: Journal of Physical Chemistry B
URI: http://scholarbank.nus.edu.sg/handle/10635/93844
ISSN: 10895647
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

28
checked on Jan 19, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.