LAUSR

This Expression of Concern is for the above article, published online on 2 May 2017 in Wiley Online Library (wileyonlinelibrary.com), which has been published by agreement with and at the request of the authors, the journal Editor-in-Chief Ulf De Faire, and JohnWiley & Sons Ltd. The Expression of Concern has been agreed due to the potential for questionable NMR data and analysis in this particular article. This concern arose following notification sent by the authors to inform the Journal that an Investigation Committee at the University of Liverpool is currently investigating possible research misconduct involving author Daniel J. Antoine relating to NMR data and analysis. Further actions by the Journal will be taken once the results of the investigation have been announced. We are issuing this Expression of Concern to alert our readers to these problems.