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Molecularly resolved studies of the role of basicity in the reaction of amines with oxygen at a Cu(110) surface

Davies, Philip Rosser, Edwards, Dyfan and Parsons, Martin 2007. Molecularly resolved studies of the role of basicity in the reaction of amines with oxygen at a Cu(110) surface. Surface Science 601 (15) , pp. 3253-3260. 10.1016/j.susc.2007.06.009

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Abstract

The role of basicity in the surface reactions of amines has been investigated in an STM/XPS study of the oxidation of methylamine, ethylamine and 2,2,2-trifluoroethylamine at a Cu(l 10) surface. Methylamine and ethylamine are strongly basic molecules and for sub monolayer concentrations of oxygen form an amine/oxygen complex characterised by a (3 x 1) structure. The complex rapidly decomposes at room temperature to form water and an imide which desorbs via beta-elimination. In contrast, 2,2,2-trifluoroethylamine has a relatively low basicity and its reactions with surface oxygen do not involve a stable intermediate. (c) 2007 Elsevier B.V. All rights reserved.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Subjects: Q Science > QD Chemistry
Uncontrolled Keywords: Methylamine; Ethylamine; STM; XPS; Surface; Cu(1 1 0); Oxidation
Publisher: Elsevier
ISSN: 0039-6028
Last Modified: 03 Nov 2017 01:40
URI: http://orca.cf.ac.uk/id/eprint/10338

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