Porous supramolecular compound based on paddle-wheel shaped copper(ii)–adenine dinuclear entities

Thomas-Gipson, Jintha; Beobide, Garikoitz; Castillo, Óscar; Cepeda, Javier; Luque, Antonio; Pérez‐Yáñez, Sonia; Aguayo, Andrés T.; Román, Pascual

doi:10.1039/c1ce05195d

Cited by 47 publications

(38 citation statements)

References 68 publications

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“…[1][2][3] Protonated and deprotonated nucleobases play a key role in many biochemical processes, and can also generate supramolecular compounds of interest in crystal engineering, molecular recognition, liquid crystals, molecule-based magnetism and materials science. [12][13][14][15][16][17][18][19] The nucleobase adenine presents up to four endocyclic (N1, N3, N7 and N9) and one exocyclic (N6) protonatable N-atoms (in basicity order: N9 > N1 > N7 > N3 > N6) which can afford a wide range of neutral tautomers and protonated forms (Chart 1). Both organic and inorganic salts based on mono-and diprotonated adenine [adeninium (B) or bisadeninium (C), respectively] are found in the literature.…”

Section: Enhancement Of the Intermolecular Magnetic Exchange Through mentioning

confidence: 99%

Enhancement of Intermolecular Magnetic Exchange through Halogen···Halogen Interactions in Bisadeninium Rhenium(IV) Salts

Armentano

Barquero

Rojas‐Dotti

et al. 2017

Crystal Growth & Design

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Two novel Re IV salts of general formula [H2ade]2[Re IV X6]X2•4H2O [H2ade 2+ = 9H-adenine-1,7-diium; X = Cl(1) and Br(2)] have been synthesized and magneto-structurally characterized. 1 and 2 are isostructural salts that crystallize in the orthorhombic system with space group Fdd2. Both compounds are made up of discrete mononuclear [Re IV X6] 2and Xanions and doubly protonated adenine cations. The six-coordinate rhenium(IV) ion is bonded to six halide ligands [X = Cl (1) and Br (2)] in an octahedral geometry. Short intermolecular Re IV −X•••X−Re IV interactions, as well as Re IV −X•••H−N(H2ade) and Re IV −X•••H−Ow hydrogen bonds, are present in the crystal lattice of 1 and 2. Magnetic susceptibility measurements on polycrystalline samples of 1 and 2 in the temperature range 2.0-300 K show the occurrence of significant intermolecular antiferromagnetic interactions in both compounds, resulting in the observation of maxima in χM at ca. 6.0 (1) and 12.0 K (2). The larger spin delocalization from the Re IV ion onto their peripheral bromide ligands when compared to the chloride ligands accounts for the enhancement of the magnetic exchange observed in 2.

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Section: Enhancement Of the Intermolecular Magnetic Exchange Through mentioning

confidence: 99%

Enhancement of Intermolecular Magnetic Exchange through Halogen···Halogen Interactions in Bisadeninium Rhenium(IV) Salts

Armentano

Barquero

Rojas‐Dotti

et al. 2017

Crystal Growth & Design

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“…53 However, other factors cannot be fully excluded, such as the existence of strong interactions between N2 and the channel walls at 77 K that hinder diffusion into the material. 54…”

Section: Nitrogen Sorption At 77 Kmentioning

confidence: 99%

Influence of the Amide Groups in the CO₂/N₂ Selectivity of a Series of Isoreticular, Interpenetrated Metal–Organic Frameworks

Safarifard

Rodríguez‐Hermida

Guillerm

et al. 2016

Crystal Growth & Design

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Here we report the use of a pillaring strategy for the design and synthesis of three novel amidefunctionalized metal-organic frameworks (MOFs), TMUs-22/-23/-24, isoreticular to the recently reported iminefunctionalized TMU-6 and TMU-21 MOFs. An extensive study of their CO2 sorption properties and selectivity for CO2 over N2, from single gas sorption isotherms to breakthrough measurements, revealed that not only the incorporation of amide groups but also their accessibility is crucial to obtain enhanced CO2 sorption and CO2/N2 selectivity. Therefore, the MOF with more accessible amide groups (TMU-24) shows a CO2/N2 selectivity value of ca. 10 (as revealed by breakthrough experiments), which is ca. 500 % and 700 % of the selectivity values observed for the other amidecontaining (TMU-22 and TMU-23) and imine-containing (TMU-6 and TMU-21) MOFs. ASSOCIATED CONTENT Supporting Information. Synthetic procedure for ligand synthesis, crystallographic data, PXRD diagrams, TGA plots, gas sorption and separation data. This material is available free of charge via the Internet at http://pubs.acs.org.

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“…However, MOFs possess pores, when the network-sustaining interactions for MOFs are of sufficient strength to pay the energetic penalty for existence of the pores themselves. 80 A series of approaches, such as "reducing the concentration of reaction system" strategy, "choosing aromatic tritopic carboxylate ligands" strategy, "choosing polyphosphonate ligands" strategy, "metalloligands" strategy, and "charge-assisted hydrogen bonds" strategy, have been adopted to build porous MOFs with the use of carboxylates, phosphonates, and sulfonates as ligands. Besides porosity, MOFs should be fabricated with nanoscale size, good biocompatibility, and better control over drug release.…”

Section: Discussionmentioning

confidence: 99%

The preparation of metal–organic frameworks and their biomedical application

Liu¹,

Tian

Shi

et al. 2016

IJN

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The development of a safe and targetable drug carrier is a major challenge. An efficient delivery system should protect cargo from degradation and cleanup, and control of drug release in the target site. Metal–organic frameworks (MOFs), consisting of metal ions and a variety of organic ligands, have been applied for drug delivery due to their distinct structure. In this review, we summarized the synthesis strategies of MOFs, especially emphasizing the methods of pore creation in frameworks, which were based on recent literatures. Subsequently, the controlled size, biocompatibility, drug releasing performances, and imaging of MOFs were discussed, which would pave the road for the application in drug-delivery systems.

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Porous supramolecular compound based on paddle-wheel shaped copper(ii)–adenine dinuclear entities

Cited by 47 publications

References 68 publications

Enhancement of Intermolecular Magnetic Exchange through Halogen···Halogen Interactions in Bisadeninium Rhenium(IV) Salts

Enhancement of Intermolecular Magnetic Exchange through Halogen···Halogen Interactions in Bisadeninium Rhenium(IV) Salts

Influence of the Amide Groups in the CO₂/N₂ Selectivity of a Series of Isoreticular, Interpenetrated Metal–Organic Frameworks

The preparation of metal–organic frameworks and their biomedical application

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Porous supramolecular compound based on paddle-wheel shaped copper(ii)–adenine dinuclear entities

Cited by 47 publications

References 68 publications

Enhancement of Intermolecular Magnetic Exchange through Halogen···Halogen Interactions in Bisadeninium Rhenium(IV) Salts

Enhancement of Intermolecular Magnetic Exchange through Halogen···Halogen Interactions in Bisadeninium Rhenium(IV) Salts

Influence of the Amide Groups in the CO2/N2 Selectivity of a Series of Isoreticular, Interpenetrated Metal–Organic Frameworks

The preparation of metal&ndash;organic frameworks and their biomedical application

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Influence of the Amide Groups in the CO₂/N₂ Selectivity of a Series of Isoreticular, Interpenetrated Metal–Organic Frameworks

The preparation of metal–organic frameworks and their biomedical application