Interpenetration, Self-Catenation, and New Topology in Metal–Organic Frameworks of Cobalt with Mixed Organic Linkers

Zhang, Jianyong; Jing, Xue-Hui; Ma, Yu; Cheng, Ai-Ling; Gao, En‐Qing

doi:10.1021/cg200120p

Cited by 36 publications

(10 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The strongest and most reliable labile interaction that is used for this purpose is metal-ligand coordinate bond formation, and there are numerous examples of coordination networks in which the metal ion selects for a mixture of ligand types rather than forming homoleptic complexes, to give threecomponent (metal salt + ligand A + ligand B) assemblies. Typical recent examples include Co(II)-based networks containing both 4,4 0 -bipyridine and bis-carboxylate bridging ligands in which the metal ions have N 2 O 4 coordination environments, 45 and a Ni(II)/ Ni(III) coordination network containing both pyridine-4-carboxylate and benzene 1,4-dicarboxylate ligands. 46 A related example with the logic inversed -one ligand having two orthogonal binding sites to select for two types of metal ion -is provided by a ligand containing a pyrazolyl-pyridine chelating site which binds to Ni(II) or Co(II) ions, and a pendant nitrile group, which coordinates to Ag(I) ions.…”

Section: Paul R Raithbymentioning

confidence: 99%

Functional behaviour from controlled self-assembly: challenges and prospects

2013

View full text Add to dashboard Cite

Many naturally occurring systems show us how multi-component supramolecular assemblies can generate useful functional behaviour. In this article the problems and limitations associated with achieving such behaviour in artificial multi-component assemblies is discussed, together with two examples of functions in artificial supramolecular assemblies based on (i) host-guest chemistry in cavities of cages, and (ii) light-harvesting in multi-chromophore arrays. Important challenges for the future are summarised.

show abstract

Section: Paul R Raithbymentioning

confidence: 99%

Functional behaviour from controlled self-assembly: challenges and prospects

2013

View full text Add to dashboard Cite

show abstract

“…The early examples of 3D self-penetrating coordination polymers were described by Robson and co-workers . In 2a , one bpp ligand in the hexagonal Zn 6 (bpp) 2 (obc) 4 circuit (highlighted in yellow in Figure a) threads into the smaller square window Zn 4 (bpp) 2 (obc) 2 (highlighted in green) thus resulting in a self-penetrating array, so-called self-penetration (or self-catenation). − Although the origin of the self-penetrated structure is not clearly known, the presence of π–π stacking between obc and bpp molecules via an edge-to-face (gray dashed line, C–H···centroid distance 3.507 Å) mode and H-bonding (blue dashed line, C–H···O 2.633 Å) may be responsible for the stabilization of 2a .…”

Section: Results and Discussionmentioning

confidence: 99%

Temperature-Dependent Supramolecular Isomeric Zn(II)-Metal–Organic Frameworks and Their Guest Exchange

Habata

Lee

2020

Crystal Growth & Design

View full text Add to dashboard Cite

A pair of three-dimensional metal–organic framework supramolecular isomers (1a and 2a) prepared from the solvothermal reactions of Zn(NO3)2·4H2O, 1,4-bis(4-pyridyl)piperazine (bpp), and 4,4′-oxybis(benzoic acid) (H2obc) in different temperatures was structurally elucidated, and a series of guest exchanges on these isomers were performed without the loss of single crystallinity. At 110 and 130 °C in DMF/H2O, an 8-fold [4 + 4] interpenetrated coordination polymer {[Zn(bpp)(obc)]·3H2O} n (1a) with sra topology and a self-penetrated coordination polymer {[Zn3(bpp)3(obc)3]·2DMF·4H2O} n (2a) with a new topology were isolated, respectively. In the guest-exchange experiments, water molecules in isomer 1a were displaced by acetone and ethylene glycol molecules, while dimethylformamide molecules in isomer 2a were replaced by acetone and ethylene glycol as well as bulkier diethylene glycol due to its larger void. Photoluminescence properties of two isomers and their guest-exchanged products were also measured and discussed.

show abstract

“…Strategically designing or selecting featured organic ligands on the basis of their functional groups/substituent, coordination modes, length, and rigidity is an efficient route to achieve expected MOFs . In this regard, no matter whether some substituent, such as nitro groups, participate or not in the coordination, it may further exert a profound effect on the assembling process, structures, and physical properties of the complexes. − However, the effect of such functional groups/substituent on the structural construction is not explicit. To gain an insight into that function and make expected MOFs, it is significantly important to compare these four structures with other Mn(II) MOFs constructed by similar ligands.…”

Section: Resultsmentioning

confidence: 99%

Effect of Coordinated Solvent Molecules on Metal Coordination Sphere and Solvent-Induced Transformations

Zhang

Wang

et al. 2017

Crystal Growth & Design

View full text Add to dashboard Cite

Four similar Mn(II) metal–organic frameworks (MOFs), {[Mn2(nbtc)(H2O)2(S)]·S·0.5H2O} n [S = DMF (1), DMA (2), NMP (3), DEF (4)] (DMF = N,N′-dimethylformamide, DMA = N,N′-dimethylacetamide, NMP = N-methyl-2-pyrrolidinone, DEF = N,N′-diethylformamide), have been assembled solvothermally from the nitro and carboxyl doubly functionalized ligand 6,6′-dinitro-2,2′,4,4′-biphenyl tetracarboxylic acid (H4nbtc) and characterized by single-crystal X-ray diffraction, elemental analyses, infrared spectroscopy, thermogravimetric analyses, and powder X-ray diffraction. All MOFs exhibit unique three-dimensional double-walled open-frameworks with one-dimensional parallelogram channels and have guest/coordinated water and carbonyl solvent molecules, reasonably providing a good example of the competitive behavior of water and carbonyl solvent molecules and an excellent candidate for studying the single crystal coordinated solvent exchange transformations. Interestingly, because of the different steric hindrance of the series of coordinated carbonyl solvent molecules, the MOFs’ structural differences primarily display on the coordination mode of O1W and coordination sphere of Mn1/Mn2 between MOFs 1(4) and 2(3). And it is also found that a small variation of the lattice parameters, unit cell volume, and density occurs. Furthermore, MOFs 1–3 show solvent-induced single-crystal-to-single-crystal (SCSC) transformations, which only exchange coordinated and guest carbonyl solvent molecules (DMF, DMA, NMP). And fortunately, the available single crystal data of 2′ and 2″ have been collected, which were obtained by soaking 1 and 3 in DMA solution for 5 days and 7 days respectively, and they have the same molecular formula as 2 but slightly different structures from 2. In such transformations, the complete solvent exchanging time discrimination of 2 to 3 (10 days), 3 to 2 (7 days), 3 to 1 (5 days), 1 to 2 (5 days), and 2 to 1 (3 days) is susceptible to the size of carbonyl solvent molecules (NMP > DMA > DMF), and the metal coordination sphere of SCSC regenerated samples is influenced not only by the character of coordinated carbonyl solvents but also the nature of mother crystals. In addition, MOFs 1–4 exhibit antiferromagnetic coupling, confirmed through magnetic susceptibility measurements.

show abstract

Interpenetration, Self-Catenation, and New Topology in Metal–Organic Frameworks of Cobalt with Mixed Organic Linkers

Cited by 36 publications

References 43 publications

Functional behaviour from controlled self-assembly: challenges and prospects

Functional behaviour from controlled self-assembly: challenges and prospects

Temperature-Dependent Supramolecular Isomeric Zn(II)-Metal–Organic Frameworks and Their Guest Exchange

Effect of Coordinated Solvent Molecules on Metal Coordination Sphere and Solvent-Induced Transformations

Contact Info

Product

Resources

About