A zinc(II) metal–organic framework with a novel topology formed from 4,4′,4′′-nitrilotribenzoate and 4,4′-bipyridine ligands

Zhao, Meng; Su, Jian; Zhang, Jun; Wu, Jieying; Tian, Yupeng

doi:10.1107/s2053229615014813

Cited by 5 publications

(3 citation statements)

References 24 publications

(24 reference statements)

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“…MUF-22 features an uncommon , type of eight-connected trinuclear zinc(II) SBU that links the ntb and dabco ligands into a 3D network (Figure S6). Channels with a cross-section of ∼22 × 27 Å (interatomic distances) propagate along the c axis …”

Section: Resultssupporting

confidence: 89%

“…Channels with a cross-section of ∼22 × 27 Å (interatomic distances) propagate along the c axis. 38 N 2 adsorption isotherms measured at 77 K established the porosity of MUF-21 and MUF-22 following activation (Figures S13 and S14). For MUF-21, a steep rise in N 2 uptake up to P/ P o ∼ 0.01 is followed by a near-plateau region between P/P o ∼ 0.01−0.1.…”

Section: ■ Results and Discussionmentioning

confidence: 95%

“…Channels with a crosssection of ~22 × 27 Å (interatomic distances) propagate along the c axis. [38] N 2 adsorption isotherms measured at 77K established the porosity of MUF-21 and MUF-22 following activation (Figs. S13-14).…”

Section: Synthesis Of Muf-21 and Muf-22mentioning

confidence: 99%

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Multicomponent Metal–Organic Frameworks as Defect-Tolerant Materials

et al. 2015

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Multicomponent metal-organic frameworks (MOFs) comprise multiple, structurally diverse linkers fixed into an ordered lattice by metal ions or clusters as secondary building units (SBUs). Here, we show how multicomponent MOFs are ideal platforms for engineering materials with high levels of vacancy defects. First, a new type of quaternary MOF that is built up from two neutral, linear ditopic linkers, a 3-fold-symmetric carboxylate ligand, and a dinuclear paddlewheel SBU was synthesized. This MOF, named MUF-32 (MUF = Massey University Framework), is constructed from dabco, 4,4′-bipyridyl (bipy), 4,4′,4″-nitrilotrisbenzoate (ntb), and zinc(II), and it adopts an ith-d topology. The zinc(II) ions and ntb ligand define an underlying [Zn2(ntb)4/3] sublattice (with pto topology) that is "load bearing" and maintains the structural integrity of the framework. On the other hand, the dabco and bipy ligands are "decorative", and high levels of vacancy defects can be introduced by their partial omission or removal. These defects can be generated by direct synthesis or by postsynthetic modification. The framework structure, crystallinity, and porosity are maintained even when vacancy levels of 80% are reached. Defect healing is possible by introducing free ligands in a solvent-assisted process to restore pristine MUF-32. Computational analysis reveals that the mechanical instability of the [Zn2(ntb)4/3] sublattice sets an upper limit on defect levels in this material. Multicomponent Metal-Organic Frameworks as Defect-Tolerant Materials Seok J. Lee, [a] Celine Doussot, [a] Anthony Baux, [a] Lujia Liu, [a] Geoffrey B. Jameson, [a] Christopher Richardson, [b] Joshua J. Pak, [c] Fabien Trousselet, [d] Francois-Xavier Coudert, [d] Supporting Information PlaceholderABSTRACT: Multicomponent metal-organic frameworks (MOFs) comprise multiple, structurally-diverse linkers fixed into an ordered lattice by metal ions or clusters as secondary building units (SBUs). Here, we show how multicomponent MOFs are ideal platforms for engineering materials with high levels of vacancy defects. First, a new type of quaternary MOF that is built up from two neutral, linear ditopic linkers, a threefold-symmetric carboxylate ligand, and a dinuclear paddlewheel SBU was synthesized. This MOF, named MUF-32 (MUF = Massey University Framework), is constructed from dabco, 4,4'-bipyridyl (bipy), 4,4',4''-nitrilotrisbenzoate (ntb) and zinc(II), and it adopts an ith-d topology. The zinc(III) ions and ntb ligand define an underlying [Zn 2 (ntb) 4/3 ] sublattice (with pto topology) that is 'load bearing' and maintains the structural integrity of the framework. On the other hand, the dabco and bipy ligands are 'decorative' and high levels of vacancy defects can be introduced by their omission. These defects can be generated by direct synthesis or by postsynthetic modification. The framework structure, crystallinity and porosity are maintained even when vacancy levels of 80% are reached. Defect healing is possible by introducing free ligands in a s...

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Section: Resultssupporting

confidence: 89%

Section: ■ Results and Discussionmentioning

confidence: 95%