A multiplicity of CN bonding configurations on Ni(110)

被引：43

作者：

Kardinal, I ^{[1
]}

Netzer, FP ^{[1
]}

Ramsey, MG ^{[1
]}

机构：

[1] KARL FRANZENS UNIV GRAZ,INST PHYS EXPT,A-8010 GRAZ,AUSTRIA

来源：

SURFACE SCIENCE | 1997年 / 376卷 / 1-3期

关键词：

chemisorption; cyanogen; electron energy loss spectroscopy; low index single crystal surfaces; nickel; ORGANIC-MOLECULES; SURFACE; CYANIDE; SPECTROSCOPY; CYANOGEN; HREELS; INTERPHASE; ELECTRODES; VIBRATIONS; PD(111);

D O I：

10.1016/S0039-6028(96)01396-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

High-resolution electron energy-loss spectroscopy (HREELS) has been applied to CN overlayers created by the dissociation of C2N2 on Ni(110). For the well-ordered overlayer formed at room temperature, the lowest CN stretch frequency (190 meV) so far reported is observed, along with distinct frustrated translation and rotation modes. The CN is concluded to be lying in the grooves of the surface with both vertical and lateral pi-bonding. When condensed cyanogen is warmed to room temperature, a denser, disordered CN overlayer is formed. HREELS indicates that in addition to the flat-lying in-groove species, CN is adsorbed on the Ni ridges in both carbon- and nitrogen-bound vertical configurations, as evidenced by a band of very high CN stretch frequencies (245-270 meV) and their associated metal-molecule modes. (C) 1997 Elsevier Science B.V.

引用

页码：229 / 236

页数：8

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