Non-covalent interaction of benzene with methanol and diethyl ether solid surfaces

We present laboratory experiments on binary, layered ices comprised of benzene (C 6 H 6 ) on methanol (CH 3 OH) and on diethyl ether (CH 3 CH 2 OCH 2 CH 3 ). Temperature programmed desorption (TPD) and reflection-absorption infrared spectroscopy (RAIRS) have been used to investigate the growth mecha...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2016-07, Vol.18 (3), p.279-281
Main Authors: Marchione, Demian, McCoustra, Martin R. S
Format: Article
Language:English
Subjects:
Benzene
Clusters
Diethyl ether
Hydrogen bonding
Infrared spectroscopy
Islands
Methyl alcohol
Solid surfaces
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Summary:We present laboratory experiments on binary, layered ices comprised of benzene (C 6 H 6 ) on methanol (CH 3 OH) and on diethyl ether (CH 3 CH 2 OCH 2 CH 3 ). Temperature programmed desorption (TPD) and reflection-absorption infrared spectroscopy (RAIRS) have been used to investigate the growth mechanisms in these systems. Ab initio quantum chemical calculations on simple gas-phase model clusters are used to aid interpretation of the experimental data by highlighting the key interactions established at the interface. Our observations are consistent with C 6 H 6 forming islands on CH 3 OH, although evidence of strong hydrogen bonding interactions indicates some degree of surface wetting. In contrast, layer-by-layer growth is proposed for C 6 H 6 on the CH 3 CH 2 OCH 2 CH 3 substrate. We have investigated the interactions involved at the interface of binary, layered ices (benzene on methanol and on diethyl ether) by means of laboratory experiments and ab initio calculations on model clusters.
ISSN:1463-9076
1463-9084
DOI:10.1039/c6cp01787h