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CROSSCHECK

: This document is CrossCheck deposited

RELATED DATA

: Supplementary Information

: Crystal Structure Data

IDENTIFIERS

: Ou Sun (ResearcherID)

: Hui Xu (ResearcherID)

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 28 July 2014; Accepted 22 September 2014; Accepted Manuscript published 23 September 2014; Advance Article published 13 October 2014; Version of Record published 29 October 2014