Details

Autor(en) / Beteiligte

• Prasad, Ram R. R.
• Seidner, Sarah E.
• Cordes, David B.
• Lozinska, Magdalena M.
• Dawson, Daniel M.
• Thompson, Megan J.
• Düren, Tina
• Chakarova, Kristina K.
• Mihaylov, Mihail Y.
• Hadjiivanov, Konstantin I.
• Hoffmann, Frank
• Slawin, Alexandra M. Z.
• Ashbrook, Sharon E.
• Clarke, Matthew L.
• Wright, Paul A.

Titel

STA-27, a porous Lewis acidic scandium MOF with an unexpected topology type prepared with 2,3,5,6-tetrakis(4-carboxyphenyl)pyrazine

Ist Teil von

• Journal of materials chemistry. A, Materials for energy and sustainability, 2019, Vol.7 (10), p.5685-5701

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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 (TCPP 4− ) as the tetratopic carboxylate linker. STA-27 possesses a unique scandium-based 1D rod secondary building unit (SBU) comprising corner-sharing scandium Sc 2 O 11 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 Al 3+ and Ga 3+ cations give isostructural MOFs with a different, previously reported, topology type based on chains of corner-sharing MO 4 (OH) 2 octahedra: the Al-form possesses attractive properties for CO 2 adsorption.