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ÔÚJPCCµÄÎÄÏ×ÉÏ¿´µ½Ëµ£¬µ±¼ÆËãÎü¸½ÔÚ½ðÊô±íÃæÉÏ·Ö×ӵįµÂÊ£¬¿ÉÒÔÖ»¼ÆËã±»Îü¸½µÄ·Ö×ӵįµÂʶø²»ÊÇÕû¸öÌåϵµÄƵÂÊ£¬ËùÒÔÏëÎÊÎÊ£¬µ½µ×ÈçºÎÖ»¼ÆË㲿·ÖµÄƵÂÊÄØ ÎÄÏ×ÖоßÌåÃèÊöÈçÏ ¡°For gas-phase molecules, the full vibrational spectra were computed and compared with the partial vibrational spectra where only the C and N atoms in the isocyanide groups were displaced from their equilibrium positions. The difference in the N=C vibrational frequency obtained in the two ways is marginal (about a few cm-1 or 0.1%). For computational efficiency, we calculated only the partial phonon spectra for isocyanides on Au(111), while fixing the equilibrium positions of the surface atoms and of those atoms not belonging to the isocyanide groups. Since gold has quite large atomic mass compared with that of first row atoms, the resulting stretching frequencies are expected to have small deviations from those obtained from the full phonon calculation.¡± http://pubs.acs.org/doi/pdfplus/10.1021/jp7111044 |
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