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CROSSCHECK

: This document is CrossCheck deposited

RELATED DATA

: Supplementary Information

: Crystal Structure Data

COPYRIGHT AND LICENSING

: The Royal Society of Chemistry has an exclusive publication licence for this journal

OPEN ACCESS: The accepted version of this article will be made freely available after a 12 month embargo period

PUBLICATION HISTORY

: Received 9 April 2015; Accepted 22 May 2015; Accepted Manuscript published 25 May 2015; Advance Article published 1 June 2015; Version of Record published 9 June 2015