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Bourne, Susan A.; J, Lu; Mondal, Arunendu; Moulton, Brian; Zaworotko, Michael J.

doi:10.1002/1521-3757(20010601)113:11<2169::aid-ange2169>3.3.co;2-y

Cited by 39 publications

(49 citation statements)

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“…Twisting of the COO group by more than 10°is observed in several other benzyl mono-and dicarboxylates in metal paddlewheel structures. [32,33] Perhaps the most noteworthy contrast between the P4/ncc and I4/mcm phases is that the lower point group symmetry in the P4/ncc phase of 1 contains a small offset in z (d = 0.012 Å with respect to the I4/mcm phase) for the linked units at ( 1 ⁄4 1 ⁄4 z) and (-1 ⁄4 1 ⁄4 z), meaning the frameworks are not perfectly square in the P4/ncc phase, but slightly puckered. The importance of this feature (e.g., symmetrical vs. nonsymmetrical networks) is expected to be manifested in a variation of adsorption properties, that may be rationally modified in the laboratory.…”

Section: Resultsmentioning

confidence: 99%

Microporous Metal–Organic Frameworks with High Gas Sorption and Separation Capacity

Lee

Olson

Pan

et al. 2007

Adv Funct Materials

325

273

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The design, synthesis, and structural characterization of two microporous metal–organic framework structures, [M(bdc)(ted)0.5]·2 DMF·0.2 H2O (M = Zn (1), Cu (2); H2bdc = 1,4‐benzenedicarboxylic acid; ted = triethylenediamine; DMF: N,N‐dimethylformamide) is reported. The pore characteristics and gas sorption properties of these compounds are investigated at cryogenic temperatures, room temperature, and higher temperatures by experimentally measuring argon, hydrogen, and selected hydrocarbon adsorption/desorption isotherms. These studies show that both compounds are highly porous with a pore volume of 0.65 (1) and 0.52 cm3 g– 1 (2). The amount of the hydrogen uptake, 2.1 wt % (1) and 1.8 wt % (2) at 77 K (1 atm; 1 atm = 101 325 Pa), places them among the group of metal–organic frameworks (MOFs) having the highest H2 sorption capacity. [Zn(bdc)(ted)0.5]·2 DMF·0.2 H2O adsorbs a very large amount of hydrocarbons, including methanol, ethanol, dimethylether (DME), n‐hexane, cyclohexane, and benzene, giving the highest sorption values among all metal–organic based porous materials reported to date. In addition, these materials hold great promise for gas separation.

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Section: Resultsmentioning

confidence: 99%

Microporous Metal–Organic Frameworks with High Gas Sorption and Separation Capacity

Lee

Olson

Pan

et al. 2007

Adv Funct Materials

325

273

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“…This value should be compared with that of 10.712 Å in 7, where the two carboxylate functions are in para positions. The present coordination mode of the isophthalate dianion forming a discrete Ni II 4 cluster is without precedence in the literature [42][43][44].…”

Section: Scheme 2 Complexes Prepared and Their Labelsmentioning

confidence: 99%

Dinuclear Complexes as Building Blocks for Tetra-Nuclear Macrocyclic Complexes with Dithiolate Macrocyclic Ligand

Lozan¹

2013

ChemJMold

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A series of novel tri-, tetra-and pentanuclear complexes composed of dinuclear LM 2 units (M=Co, Ni, Zn; L=24-membered macrocyclic hexaaza-dithiophenolate ligand) and ferrocene-carboxylate ([CpFeC 5 H 4 CO 2 ]ˉ), 1,1'-ferro-cenedicarboxylate ([Fe(C 5 Keywords: coordination chemistry, amino-thiophenolate ligands, di-and tetranuclear complexes, ferrocene and naphthalene diimide derivatives, polynuclear complexes IntroductionThe chemistry of container molecules has developed extensively over the past two decades. Many container molecules such as calixarenes, resorcarenes, cyclodextrins, carcerands and glycourils have been invaluable in studying the fundamental principles of inclusion phenomena and consequently their use in separation science or drug delivery, as two examples of application. Importantly, the area has attracted interest in the field of supramolecular chemistry because the properties of such host-guest compounds are often different from those of their constituent components. By adjusting the size and form of the binding cavity it is often possible to complex co-ligands in unusual coordination modes, to activate and transform small molecules, or to stabilize reactive intermediates [1,2]. One subclass are the metallated container molecules, in which metal ions and clusters are used as both a point of recognition and to give the container a well-defined structure. Such compounds also allow for an interplay of molecular recognition and transition-metal catalysis, and for the construction of more effective enzyme mimics. Of interest to the present work is the ability of metallocavitands to recognize and encapsulate difunctionalised molecules towards stabilising or enhancing the optical and electronic properties of redox-and photo-active compounds within a confined environment set up by two hemispheres.The carboxylate group, RCO 2-, can bind to transition metals in a variety of coordination modes giving rise to complexes of great structural diversity [3]. Current activities focus on the coordination chemistry of polycarboxylate ligands, as these offer great potential in the construction of polynuclear aggregates [4] and extended coordination polymers with micro-and mesoporous structures [5][6][7][8] or catalytic properties [9]. In addition, polycarboxylate ligands are of importance as spin-coupling bridging ligands [10][11][12][13][14][15][16][17] in the rapidly expanding fi eld of molecular magnetism [18, 19]. In this context, an enormous amount of literature has been generated concerning the distance dependence of magnetic exchange interactions between metal atoms linked by extended dicarboxylate ligands. Dinuclear copper complexes bridged by oxalate [20, 21] and terephthalate [22][23][24] dianions form, by far, the largest group of such systems, and it appears that the exchange interactions depend on the M···M distance [25], the relative orientation of the magnetic orbitals [26], and the degree of conjugation of the organic spacer unit [27, 28].

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“…Of the numerous lanthanide complexes with carboxylato ligands widely studied, most possess a variety of dimeric or infinite chain structures in which the carboxylate groups act as bridges between metal atoms, and the number of bridging carboxylato groups varies in different complexes [8]. Aromatic polycarboxylic acids such as 2,6-naphthalenedicarboxylic acid [9], 1,4-benzenedicarboxylaic acid [10] and 1,3-benzenedicarboxylic acid [11,12] are used extensively in the synthesis of coordination polymers, whereas utilization of monobenzoato and derivatives to construct polymeric Ln(III) complexes are much less well known, although several examples have been reported recently [13].…”

Section: Introductionmentioning

confidence: 99%

Syntheses, crystal structures and fluorescent properties of four one-dimensional lanthanide coordination polymers with 3-cyanobenzoato

Chen

Liu

et al. 2006

Journal of Coordination Chemistry

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The hydrothermal reactions of Nd(ClO 4 ) 3 Á 6H 2 O, Gd(ClO 4 ) 3 Á 6H 2 O, Dy(ClO 4 ) 3 Á 6H 2 O, Er(ClO 4 ) 3 Á 6H 2 O with 1,3-dicyanobenzene, give rise to four one-dimensional rare earth-based coordination polymers: [M(3-CNC 6 H 4 COO) 3 (H 2 O) 2 ] n (where M ¼ Nd (1), Gd (2), Dy (3), Er (4), 3-CNC 6 H 4 COO ¼ 3-cyanobenzoato), respectively. Their solid-state structures have been characterized by X-ray single-crystal diffraction studies. The results show that 1,3-dicyanobenzene hydrolyzed to give 3-cyanobenzoato under hydrothermal condition, and the four complexes are isomorphous. Crystal data for 1: triclinic, space group P-1, a ¼ 9.

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Cited by 39 publications

References 0 publications

Microporous Metal–Organic Frameworks with High Gas Sorption and Separation Capacity

Microporous Metal–Organic Frameworks with High Gas Sorption and Separation Capacity

Dinuclear Complexes as Building Blocks for Tetra-Nuclear Macrocyclic Complexes with Dithiolate Macrocyclic Ligand

Syntheses, crystal structures and fluorescent properties of four one-dimensional lanthanide coordination polymers with 3-cyanobenzoato

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