STA-27, a porous Lewis acidic scandium MOF with an unexpected topology type prepared with 2,3,5,6-tetrakis(4-carboxyphenyl)pyrazine
MetadataShow full item record
Altmetrics Handle Statistics
Altmetrics DOI Statistics
A porous scandium MOF denoted STA-27 (St Andrews Porous Material-27) has been synthesised solvothermally using the 2,3,5,6-tetrakis(4-carboxyphenyl)pyrazine anion (TCPP4-) as the tetratopic carboxylate linker. STA-27 possesses a unique scandium-based 1D rod secondary building unit (SBU) comprising corner-sharing scandium Sc2O11 dimers connected via carboxylate groups from the linker. After activation under mild conditions STA-27 is an active Lewis acidic catalyst, while heating at elevated temperatures results in rupturing of the Sc-O-Sc linkages and a phase transition to a different topological type. Under similar synthesis conditions the smaller Al3+ and Ga3+ cations give isostructural MOFs with a different, previously reported, topology type based on chains of corner-sharing MO4(OH)2 octahedra: the Al-form possesses attractive properties for CO2 adsorption.
Prasad , R , Seidner , S , Cordes , D B , Lozinska , M , Dawson , D , Thompson , M , Düren , T , Chakarova , K , Mihaylov , M , Hadjiivanov , K , Hoffmann , F , Slawin , A M Z , Ashbrook , S E , Clarke , M & Wright , P 2019 , ' STA-27, a porous Lewis acidic scandium MOF with an unexpected topology type prepared with 2,3,5,6-tetrakis(4-carboxyphenyl)pyrazine ' , Journal of Materials Chemistry , vol. 7 , no. 10 , pp. 5685-5701 . https://doi.org/10.1039/C8TA10610J
Journal of Materials Chemistry
© 2019 the Authors. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1039/C8TA10610J
DescriptionRRRP, MLC and PAW would like to thank the Engineering and Physical Sciences Research Council (EPSRC) and CRITICAT Centre for Doctoral Training for Financial Support [Ph.D. studentship to RRRP; EP/L016419/1]. MML and PAW would also like to thank EPSRC for the FLEXICCS grant (Versatile Adsorption Process for the Capture of Carbon Dioxide from Industrial Sources; EP/N024613/1). KKC, MYM and KIH are grateful to the Bulgarian National Science Fund for the financial support (Contract no: DFNI T02/20). We thank Vladislav Blatov, Davide Proserpio, and Alexandrov Eugeny for helpful discussions regarding the topological analysis.
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.