Adsorption of nitrobenzene and some simple derivatives on the Cu(110) surface

doi:10.1016/S0039-6028(96)01068-0

Surface Science

Volume 368, Issues 1–3, 10 December 1996, Pages 310-317

https://doi.org/10.1016/S0039-6028(96)01068-0 Get rights and content

Abstract

The chemistry of nitro- and amine-substituted aromatic molecules on a Cu(110) surface has been studied using Fourier transform infrared spectroscopy, by comparison of the adsorption of nitrobenzene (NB), p-dinitrobenzene (pDNB) and p-nitroaniline (pNA). When nitrobenzene was adsorbed on a clean Cu(110) surface at room temperature, it decomposed to form a phenyl species with the C₂ axis nearer the surface normal than parallel. At 83 K, multilayer nitrobenzene formed with a vibrational spectrum, in good agreement with gas-phase data; upon warming, a phenyl species remained, which was stable to about 350 K. AES of the species present following dosing at 300 K showed carbon and oxygen but no nitrogen. When p-dinitrobenzene was adsorbed it decomposed, losing one NO₂, to form a stable nitrophenyl species on Cu(110) orientated with the C₂ axis closer to the surface normal than the phenyl species derived from nitrobenzene. In contrast, p-nitroaniline does not decompose on the Cu(110) surface at room temperature. Multilayer and monolayer p-nitroaniline are distinguished by frequency shifts of NO₂ and NH₂ modes, attributed to intermolecular hydrogen bonding. In the monolayer, the amine group appears to stabilise the ring-nitro group bond, allowing bonding to the surface via the NO₂ group in an orientation perpendicular to the surface.

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IX. Metal surfaces III: Adsorption of complex moleculesAdsorption of nitrobenzene and some simple derivatives on the Cu(110) surface

Abstract

Zeolites

J. Electron Spectrosc. Relat. Phenom.

Surf. Sci.

Spectrochim. Acta

Spectrochim. Acta

Spectrochim. Acta

Vacuum

Spectrochim. Acta

J. Organometal. Chem.

J. Organometal. Chem.

Surf. Sci.

Surf. Sci.

Surf. Sci.

Surf. Sci.

Surf. Sci.

Spectrochim. Acta

Spectrochim. Acta

Spectrochim. Acta

J. Chem. Phys.

IX. Metal surfaces III: Adsorption of complex molecules
Adsorption of nitrobenzene and some simple derivatives on the Cu(110) surface