The chemistry of the coordination polymers has in recent years advanced extensively, affording various architectures, which are constructed from a variety molecular building blocks with different interactions between them. next challenge is chemical and physical functionalization these through porous properties frameworks. This review concentrates on three aspects polymers: 1). use crystal engineering to construct frameworks connectors linkers ("nanospace engineering"), 2). characterizing...

Abstract Die Chemie der Koordinationspolymere hat sich in den vergangenen Jahren rasant entwickelt. Strukturen aus einer Vielzahl molekularer Bausteine mit unterschiedlichen Wechselwirkungen sind mittlerweile zugänglich. nächste Stufe ist die chemische und physikalische Funktionalisierung dieser Architekturen durch Einstellung ihrer Porositäten. Dieser Aufsatz konzentriert auf drei Aspekte von Koordinationspolymeren: 1) Anwendung Kristall‐Engineering zum Aufbau poröser Gerüste Konnektoren...

An astonishing amount of methane is reversibly adsorbed in pores [{CuSiF6(4,4′-bipyridine)2}n], which exists as a stable 3D microporous network (see picture). The approximate channel sizes this material 8×8 Å2 along its c axis and 6×2 the b axes. At 36 atm, density micropore volume 0.21 g mL−1, superior to that any reported zeolites.

A combination of framework-builder (Cu(II) ion and 4,4'-bipyridine (4,4'-bpy) ligand) framework-regulator (AF(6) type anions; = Si, Ge, P) provides a series novel porous coordination polymers. The highly polymers ([Cu(AF(6))(4,4'-bpy)(2)].8H(2)O)(n)(A Si (1a.8H(2)O), Ge (2a.8H(2)O)) afford robust 3-dimensional (3-D), microporous networks (3-D Regular Grid) by using AF(6)(2-) anions. channel size these complexes is ca. 8 x A(2) along the c-axis 6 2 a- or b-axes. When compounds 1a.8H(2)O...

Stable tunable channels are formed by pillared-layer-type coordination networks [{Cu2(pzdc)2(L)}n] (pzdc = pyrazine-2,3-dicarboxylate; L pyrazine, 4,4′-bipyridine, N-(4-pyridyl)isonicotinamide). Not only their channel sizes, shapes, and chemical environments systematically built up tuning the pillar ligands, but also porosity is maintained in absence of included guest molecules. These compounds can adsorb methane, amount gas adsorption controllable type ligands.

A hysteretic adsorption and desorption profile (right) accompanied by a transformation of the crystal structure is observed for title coordination polymer, which possesses pillared-layer (left), on exposure to H2O or MeOH vapor under pressure.

We measured the proton conductivity of bulk graphite oxide (GO'), a graphene oxide/proton hybrid (GO-H), and (GO) nanosheet for first time. GO is well-known electronic insulator, but conduction we observed reverse trend, as it exhibited superionic conductivity. The hydrophilic sites present in -O-, -OH, -COOH functional groups attract protons, which propagate through hydrogen-bonding networks along adsorbed water film. conductivities GO' GO-H at 100% humidity were ∼10(-4) ∼10(-5) S cm(-1),...

Pore surface control of microporous coordination polymers is great interest due to the potentially exciting functionalities it presents, such as highly selective separation, chemisorption, and novel catalysts sensors. A discussion our unique strategy aimed at engineering using metalloligands, i.e., introduction coordinatively unsaturated metal centers, presented.

Wall decoration: Coordinatively unsaturated metal centers (CuII, CoII, and NiII) can be embedded in the pore wall of a microporous coordination polymer containing Schiff base type metalloligands [M(salphdc)]2− (H4salphdc=N,N′-o-phenylenebis(salicylideneimine-5,5′-dicarboxylic acid)). These polymers possess large 1D channels with dimensions approximately 14×14 Å2 (see structure).

Five new coordination compounds with 4,4'-azopyridine (azpy), [Mn(azpy)(NO3)2(H2O)2]·2EtOH (1·2EtOH), [Co2(azpy)3(NO3)4]·Me2CO·3H2O (2·Me2CO·3H2O), [Co(azpy)2(NCS)2]·0.5EtOH (3·0.5EtOH), [Cd(azpy)2(NO3)2]·(azpy) (4·azpy), and [Cd2(azpy)3(NO3)4]·2Me2CO (5·2Me2CO), have been synthesized structurally characterized. The reaction of Mn(NO3)2·6H2O azpy in ethanol/acetone affords 1·2EtOH, whose network consists one-dimensional chains [Mn(azpy)(H2O)2]n. are associated by hydrogen bonding to provide...

The prevalence of the condensed phase, interpenetration, and fragility mesoporous coordination polymers (meso-PCPs) featuring dense open metal sites (OMSs) place strict limitations on their preparation, as revealed by experimental theoretical reticular chemistry investigations. Herein, we propose a rational design stabilized high-porosity meso-PCPs, employing low-symmetry ligand in combination with shortest linker, formic acid. resulting dimeric clusters (PCP-31 PCP-32) exhibit high surface...

Fluorine, the element with highest electronegativity and low electric polarizability, can produce a variety of characteristics, including specific adsorption sites for molecules as well flexibility to host materials. In this review, we will introduce fluorine-functionalized metal–organic frameworks/porous coordination polymers that show unique unprecedented structures, structural transformations, gas vapor adsorption/separation properties derived from fluorine characteristics. Adding...

Abstract The design of inexpensive and less toxic porous coordination polymers (PCPs) that show selective adsorption or high capacity is a critical issue in research on applicable materials. Although use Group II magnesium(II) calcium(II) ions as building blocks could provide cheaper materials lead to enhanced biocompatibility, examples PCPs are extremely limited compared with commonly used transition metal ones, because neutral bridging ligands have not been available for ions. Here we...

Introduction of an ethylenedithio group into amphiphilic bis(tetrathiafulvalene) annulated macrocycle results in the formation organogels which produce nanodot-array structures Langmuir–Blodgett films (see picture). Chemical oxidation sulphur-containing π-electron system afforded size-controllable electrically conducting nanodot structures. Supporting information for this article is available on WWW under http://www.wiley-vch.de/contents/jc_2002/2005/z502336_s.pdf or from author. Please...

Utilization of a metalloligand, ([Cu(2,4-pydca)2(H2O)].2Et3NH) (1) (2,4-pydca = pyridine-2,4-dicarboxylate), as building unit provides novel porous coordination polymer, ([ZnCu(2,4-pydca)2(H2O)3(DMF)].DMF)n (2), in which the Zn(II) ion at node network acts linker and Cu(II) channel wall is available for guest-coordination.

By utilizing the novel metalloligand LCu, [Cu(2,4-pydca)2]2- (2,4-pydca2- = pyridine-2,4-dicarboxylate), which possesses two kinds of coordination groups, selective bond formation with series first-period transition metal ions (MnII, FeII, CoII, CuII, and ZnII) has been accomplished. Depending on mode 4-carboxylate ZnII ions, LCu forms a one-dimensional (1-D) assembly repeating motif [−M−O2C−(py)N−Cu−N(py)−CO2−]: {[ZnLCu(H2O)3(DMF)]·DMF}n (2), [ZnLCu(H2O)2(MeOH)2]n (3), {[MLCu(H2O)4]·2H2O}n...

Eine erstaunlich große Menge an Methan wird reversibel von dem Koordinationspolymer [{CuSiF6(4,4′-bipyridin)2}n] adsorbiert, das ein stabiles mikroporöses 3D-Netzwerk aufweist (siehe Bild). Die Kanalgröße beträgt ca. 8×8 Å2 entlang der c-Achse und 6×2 a- b-Achse. Bei 36 atm die Dichte des in den Mikroporen adsorbierten Methans 0.21 g mL−1 – mehr als bei allen anderen untersuchten Zeolithen.

Abstract For see ChemInform in Full Text.

Functional inner space: A gigantic ring-shaped {Mo154} polyoxometalate cluster anion can be stabilized by encapsulation in dimethyldioctadecylammonium (DODA) cations. Its nanospace enables adsorption of gases and vapors, it acts as a water-tolerant solid acid catalyst (see scheme). Detailed facts importance to specialist readers are published "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted the authors. Please note: The...

Supramolecular rotators of hydrogen-bonding assemblies between anilinium (Ph-NH 3 (+)) or adamantylammonium (AD-NH and dibenzo[18]crown-6 (DB[18]crown-6) meso-dicyclohexano[18]crown-6 (DCH[18]crown-6) were introduced into [Ni(dmit) 2] salts (dmit (2-) is 2-thioxo-1,3-dithiole-4,5-dithiolate). The ammonium moieties Ph-NH (+) AD-NH cations interacted through N-H approximately O hydrogen bonding with the six oxygen atoms crown ethers, forming 1:1 supramolecular rotator-stator structures. X-ray...

Introducing polar Cu−PF6 parts into a coordination framework will open new routes in the fabrication of high-performance and/or novel functional porous materials. We have designed and synthesized one-dimensional CuII polymer [Cu(PF6)2(bpetha)2]n (1), with weak flexible parts. 1 shows property highly selective adsorption for CO2 C2H2 gases, which interact F atoms Crystallographic characterization [Cu(PF6)2(4-mepy)4] (2) basic [Cu(PF6)2(pyridine)4] structure indicates that 2 forms bonds at its...

High selectivity and low-energy regeneration for adsorption of CO2 gas were achieved concurrently in a two-dimensional Cu(II) porous coordination polymer, [Cu(PF6)2(4,4′-bpy)2]n (4,4′-bpy = 4,4′-bipyridine), containing inorganic fluorinated PF6– anions that can act as moderate interaction sites molecules.