Hasmik Harutyunyan, Martin Callsen, Tobias Allmers, Vasile Caciuc, Stefan Blügel, Nicolae Atodiresei, Daniel Wegner
We demonstrate that cyclooctatetraene (COT) can be stabilised in different conformations when adsorbed on different noble-metal surfaces due to varying molecule-substrate interaction. While at first glance the behaviour seems to be in accordance with H\"uckel's rule, a theoretical analysis reveals no significant charge transfer. The driving mechanism for the conformational change is hybridisation at the organic-metal interface and does not necessitate any charge transfer.
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http://arxiv.org/abs/1305.5125
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