Formation of isocyanate on Cu(100) from the oxidation of cyanogen and from the decomposition of isocyanic acid

被引：43

作者：

Celio, H ^{[1
]}

Mudalige, K ^{[1
]}

Mills, P ^{[1
]}

Trenary, M ^{[1
]}

机构：

[1] Univ Illinois, Dept Chem, Chicago, IL 60607 USA

来源：

SURFACE SCIENCE | 1997年 / 394卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

chemisorption; copper; cyanogen; isocyanate; infrared absorption spectroscopy; oxidation; vibrations of adsorbed molecules;

D O I：

10.1016/S0039-6028(97)00802-9

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：

Reflection adsorption infrared spectroscopy has been used to show that the same surface species forms on Cu(100) from the thermal decomposition of isocyanic acid (HNCO) and from the reaction of cyanogen (C2N2) with preadsorbed oxygen. This species is identified as isocyanate, NCO, linearly bonded to the surface through the nitrogen atom. It is characterized by an intense band due to the asymmetric NCO stretch at 2201 cm(-1), a very weak band at 1321 cm(-1) due to the symmetric NCO stretch, and a very weak band at 3448 cm(-1) due to the symmetric stretch plus asymmetric stretch combination band. Isotopic substitution with C-13, N-15, and O-18 supports the assignment. Isocyanate is stable on Cu(100) up to 500 K. (C) 1997 Elsevier Science B.V.

引用

页码：L168 / L173

页数：6

共 20 条

[1] ADSORBATE ORDERING PROCESSES AND INFRARED-SPECTROSCOPY - AN FT-IRAS STUDY OF N-2 CHEMISORBED ON THE NI (110) SURFACE [J].