Isoreticular chemistry of scandium analogues of the multicomponent metal-organic framework MIL-142

• Published in: CrystEngComm Vol. 23; no. 4; pp. 84 - 812
• Main Authors: Prasad, Ram R. R, Pleass, Charlotte, Rigg, Amber L, Cordes, David B, Lozinska, Magdalena M, Georgieva, Veselina M, Hoffmann, Frank, Slawin, Alexandra M. Z, Wright, Paul A
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 01.02.2021
• Subjects: Crystal structure; Crystallography; Crystals; Metal-organic frameworks; Nitrogen dioxide; Porous materials; Scandium; Single crystals; TATB
• ISSN: 1466-8033; 1466-8033
• DOI: 10.1039/d0ce01593h

Interpenetrated multicomponent MIL-142(Sc) MOFs were synthesised using the planar tritopic (4,4′,4′′-(1,3,5-triazine-2,4,6-triyl)tribenzoate, TATB, or 4,4′,4′′-(pyridine-2,4,6-triyl)tribenzoate, PTB) and linear ditopic (1,4-benzenedicarboxylate, BDC, or 2-amino or 2-nitro-1,4-benzenedicarboxylate (NH 2 - or NO 2 -BDC) linkers. Structure solution of the MIL-142(Sc)-TATB series from single crystal X-ray diffraction in space group R 3&cmb.macr; m reveals regioselective ordering of bulky NO 2 groups in MIL-142(Sc)-TATB-NO 2 . Use of 1,3,5-benzenetribenzoate (BTB) favours instead the mesoporous Sc-BTB, the PTB analogue of which forms in the absence of BDC. The materials are highly porous: MIL-142(Sc)-TATB-BDC has a pore volume of 0.70 cm 3 g −1 . MIL-142(Sc) is prepared and the limits of the isoreticular substitution of each linker type are explored and characterised by single-crystal XRD.