TY - JOUR
T1 - CH vibrational mode-softening in alkyl groups bound to Cu(111)
AU - Lin, Jong Liang
AU - Bent, Brian E.
N1 - Funding Information:
We thank L.H. Dubois and F. Zaera for preprints of manuscripts prior to publication. Financial support from the National Science Foundation (Grant No. CHE-90-22077) and from the Joint Services Electronics Program through the Columbia Radiation Laboratory (Contract No. DAAL03-9 l-C-0016 ) is gratefully acknowledged. BEB is a Presidential Young Investigator.
PY - 1992/6/26
Y1 - 1992/6/26
N2 - The surface vibrations of C1C3 alkyl groups bound to a Cu(111) surface have been studied by high resolution electron energy loss spectroscopy. The alkyl groups were generated by the dissociative adsorption of alkyl iodides and bromides. All of the adsorbed alkyls show CH stretching mode-softening, and isotope labelling studies indicate that the softened CH bonds are those at the α-carbon (the one bonded to the surface). Our results suggest that charge donation from the metal to the antibonding orbital of the alkyl groups is the cause of the CH stretching mode-softening.
AB - The surface vibrations of C1C3 alkyl groups bound to a Cu(111) surface have been studied by high resolution electron energy loss spectroscopy. The alkyl groups were generated by the dissociative adsorption of alkyl iodides and bromides. All of the adsorbed alkyls show CH stretching mode-softening, and isotope labelling studies indicate that the softened CH bonds are those at the α-carbon (the one bonded to the surface). Our results suggest that charge donation from the metal to the antibonding orbital of the alkyl groups is the cause of the CH stretching mode-softening.
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U2 - 10.1016/0009-2614(92)85536-J
DO - 10.1016/0009-2614(92)85536-J
M3 - Article
AN - SCOPUS:0001722316
SN - 0009-2614
VL - 194
SP - 208
EP - 212
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 3
ER -