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Strongly Coloured Thiocyanate Frameworks with Perovskite-Analogue Structures

preprint
submitted on 12.09.2018 and posted on 12.09.2018 by Matthew Cliffe, Evan Keyzer, Matthew Dunstan, Shahab Ahmad, Michael F. L. De Volder, Felix Deschler, Andrew J. Morris, Clare P. Grey
We report the first examples of thiocyanate-based analogues of the cyanide Prussian blue compounds, MIII[Bi(SCN)6], M= Fe, Cr, Sc. These compounds adopt the primitive cubic pcu topology and show strict cation order. Optical absorption measurements show these compounds have band gaps within the visible and near IR region, suggesting that they may be useful for photocatalytic applications. We also show that Cr[Bi(SCN)6] can reversibly uptake water into its framework structure pointing towards the possibility of using these frameworks for host/guest chemistry.

History

Email Address of Submitting Author

mjc222@cam.ac.uk

Institution

Dept. of Chemistry, University of Cambridge

Country

United Kingdom

ORCID For Submitting Author

0000-0002-0408-7647

Declaration of Conflict of Interest

No conflict of interest

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