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The monolayer structure of 1,2-bis(4-pyridyl)ethylene physisorbed on a graphite surface

Brewer, Adam Y., Friscic, Tomislav, Day, G.M., Overvoorde, Lois M., Parker, Julia E., Richardson, Chris N. and Clarke, Stuart M. (2012) The monolayer structure of 1,2-bis(4-pyridyl)ethylene physisorbed on a graphite surface Molecular Physics, pp. 1-7. (doi:10.1080/00268976.2012.702229).

Record type: Article

Abstract

The crystalline monolayer of 1,2-bis(4-pyridyl)ethylene physisorbed on a graphite surface at 0.44 monolayers coverage has been observed and characterized by synchrotron X-ray diffraction and differential scanning calorimetry. The experimentally determined monolayer structure has p2 symmetry with lattice parameters a?=?17.77?Å, b?=?13.69?Å and ??=?39.7°. The unit cell contains two molecules, which are oriented in a plane parallel to the surface. It is proposed that the molecules are arranged such that they are able to form a weak C–H?···?N hydrogen bond between pyridine groups. The monolayer melts at 414?K, which is unusually close to the bulk melting point for a sub-monolayer coverage system. This molecule is chiral when adsorbed on the surface, but both isomers appear in the unit cell leading to no overall chirality in the monolayer.

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More information

Published date: 10 July 2012
Keywords: monolayer, synchrotron, physisorption, 1, 2-bis(4-pyridyl)ethylene, graphite
Organisations: Organic Chemistry: Synthesis, Catalysis and Flow, Chemistry

Identifiers

Local EPrints ID: 343221
URI: http://eprints.soton.ac.uk/id/eprint/343221
ISSN: 0026-8976
PURE UUID: d42bd9b7-e1e9-4bfe-96bb-942b44423ee2
ORCID for G.M. Day: ORCID iD orcid.org/0000-0001-8396-2771

Catalogue record

Date deposited: 01 Oct 2012 13:35
Last modified: 18 Jul 2017 05:23

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Contributors

Author: Adam Y. Brewer
Author: Tomislav Friscic
Author: G.M. Day ORCID iD
Author: Lois M. Overvoorde
Author: Julia E. Parker
Author: Chris N. Richardson
Author: Stuart M. Clarke

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