Synthesis, functionalisation and post-synthetic modification of bismuth metal–organic frameworks. Issue 26 (26th June 2017)

• Record Type: Journal Article
• Authors: Köppen, M.; Beyer, O.; Wuttke, S.; Lüning, U.; Stock, N.
• Is Part Of: Dalton transactions. Volume 46:Issue 26(2017)
• Page Start: 8658
• Page End: 8663
• Publication Date: 2017-06-26
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c7dt01744h
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Two new Bi-MOFs were discovered, synthesised and characterised, and the amino-functionalised Bi-MOF was post-synthetically modified using anhydrides and 1, 3-propane sultone. Abstract : Two new bismuth metal–organic frameworks (Bi-MOFs) were discovered using high throughput experiments employing bismuth(iii ) nitrate pentahydrate and triazine-2, 4, 6-triyl-tribenzoic acid (H3 TATB). The reaction was carried out for long reaction times (∼5 d) in a water/DMF-mixture and resulted in the formation of [Bi2 (O)(OH)(TATB)]·H2 O (denoted as CAU-35). By switching to short reaction times and a methanol/DMF-mixture as the solvent, an analogue of CAU-7-BTB with the composition [Bi(TATB)]·DMF·6H2 O (denoted as CAU-7-TATB) was obtained. The use of the amino-functionalised H3 TATB linker (H3 TATB-NH2 ) resulted in the formation of a functionalised porous Bi-MOF with the composition [Bi(TATB-NH2 )]·5H2 O·0.5DMF (CAU-7-TATB-NH2 ). The structures of CAU-35 and CAU-7-TATB were successfully solved and refined from the PXRD data. CAU-7-TATB-NH2 was post-synthetically modified using anhydrides (acetic anhydride and valeric anhydride), cyclic anhydrides (succinic anhydride and phthalic anhydride), and 1, 3-propane sultone. The degree of conversion ranged from 33% to 79%.