Synthesis, crystal structure and luminescent properties of one 3D Cd(II) coordination polymer [Cd(H3BPTC)2(bpy)]n (H4BPTC = 1,1'-biphenyl-2,2',6,6'-tetracarboxylic acid, bpy = 4,4'-bipyridine)

A new 3D metal-organic coordination polymer [Cd(H(3)BPTC)(2)(bpy)](n) (1) (H(4)BPTC = 1,1'-biphenyl-2,2',6,6'-tetracarboxylic acid, bpy =4,4'-bipyridine) has been synthesized and characterized by single X-ray diffraction and IR spectroscopy. The one-dimensional metal-organic chains of the title complex, namely [Cd(H(3)BPTC)(2)](n), are held together through hydrogen bonding and bridging "second" ligand 4,4'-bpy to give a three-dimensional metal-organic network. The thermal stability of complex 1 was studied by thermal gravimetric (TG) and differential thermal analysis (DTA). Compound 1 exhibits photoluminescence with an emission maximum at ca. 380 nm upon excitation at ca. 251 nm.     

Highly emissive Zn-Ln metal-organic frameworks with an unusual 3D inorganic subnetwork

Mixed zinc-lanthanide (Zn-Ln) metal-organic frameworks (MOFs) based on the 3,5-pyrazoledicarboxylate ligand exhibit an unusual three-dimensional (3D) inorganic subnetwork and display highly efficient photoluminescence.     

Construction of polyoxometalate-based inorganic-organic compounds using silver(I) double helicates as secondary building blocks

Two polyoxometalate-based silver(I) compounds including a three-dimensional porous crystalline array and a double-helicate bisupporting cluster were achieved using metal-organic helicates and Keggin [PMo(12)O(40)](3-) as secondary building blocks.     

A zinc(II) metal-organic framework based on triazole and dicarboxylate ligands for selective adsorption of hexane isomers

A three-dimensional (3D) metal-organic framework {[Zn(2)(HBDC)(2)(dmtrz)(2)]·guest}(n) with pcu net has been solvothermally synthesized, which shows selective adsorption of linear and monobranched hexane isomers over a dibranched one.     

Rational design and crystal structure determination of a 3-D metal-organic jungle-gym-like open framework

A new three-dimensional (3-D) jungle-gym-like open metal-organic framework has been synthesized from a two-dimensional (2-D) layer compound using a heterogeneous pillar insertion reaction. Both the starting 2-D layer and the resulting 3-D open compounds have been characterized using X-ray crystallography.     

Three-dimensional pillar-layered copper(II) metal-organic framework with immobilized functional OH groups on pore surfaces for highly selective CO2/CH4 and C2H2/CH4 gas sorption at room temperature

A new three-dimensional microporous metal-organic framework Cu(BDC-OH)(4,4'-bipy)·G(x) (UTSA-15; H(2)BDC-OH = 2-hydroxy-benzenedicarboxylic acid, 4,4'-bipy =4,4'-bipyridine, G = guest molecules) with functional -OH groups on the pore surfaces was solvothermally synthesized and structurally characterized. UTSA-15 features a three-dimensional structure having 2D intercrossed channels of about 4.1 × 7.8 and 3.7 × 5.1 ?(2), respectively. The small pores and the functional -OH groups on the pore surfaces within the activated UTSA-15a have enabled their strong interactions with CO(2) and C(2)H(2) which have been revealed in their large adsorption enthalpies of 39.5 and 40.6 kJ/mol, respectively, highlighting UTSA-15a as the highly selective microporous metal-organic framework for the CO(2)/CH(4) and C(2)H(2)/CH(4) gas separation with separation selectivity of 24.2 and 55.6, respectively, at 296 K.     

Immobilizing Highly Catalytically Active Pt Nanoparticles inside the Pores of Metal-Organic Framework: A Double Solvents Approach

Ultrafine Pt nanoparticles were successfully immobilized inside the pores of a metal-organic framework, MIL-101, without aggregation of Pt nanoparticles on the external surfaces of framework by using a "double solvents" method. TEM and electron tomographic measurements clearly demonstrated the uniform three-dimensional distribution of the ultrafine Pt NPs throughout the interior cavities of MIL-101. The resulting Pt@MIL-101 composites represent the first highly active MOF-immobilized metal nanocatalysts for catalytic reactions in all three phases: liquid-phase ammonia borane hydrolysis, solid-phase ammonia borane thermal dehydrogenation, and gas-phase CO oxidation.     

New three-dimensional metal-organic framework with heterometallic [Fe-Ag] building units: synthesis, crystal structure, and functional studies

A new three-dimensional metal-organic framework (MOF) containing Fe(II) and Ag(I) ions and 2-pyrazinecarboxylic acid (pcaH) was synthesized, and its magnetic and catalytic properties were studied. The MOF has a big window size of 12.1 × 12.0 ?, with 23.8% solvent-accessible space, and shows size selectivity toward Lewis acid catalysis.     

Isoreticular homochiral porous metal-organic structures with tunable pore sizes

Chiral-layered building motifs of zinc(II) camphorate are linked through linear N-donor ligands, forming series of three-dimensional isoreticular porous homochiral frameworks. The lengths of these linear ligands control the pore sizes and free accessible volumes of the homochiral metal-organic structures.     

A three-dimensional microporous metal-organic framework with large hydrogen sorption hysteresis

A three-dimensional microporous metal-organic framework [Cd(2)(Tzc)(2)](n), which is dehydrated from [Cd(2)(Tzc)(2)(H(2)O)(2)](n), exhibits selective gas adsorption and large hydrogen sorption hysteresis.     

An organic-inorganic hybrid material constructed from a three-dimensional coordination complex cationic framework and entrapped hexadecavanadate clusters

A unique organic-inorganic hybrid compound has been separated under hydrothermal condition, which is constructed from a three-dimensional second metal-organic subunit and entrapped hexadecavanadate clusters.     

New microporous metal-organic framework demonstrating unique selectivity for detection of high explosives and aromatic compounds

A highly luminescent three-dimensional microporous metal-organic framework, [Zn(2)(oba)(2)(bpy)]·DMA, demonstrates unique selectivity for the detection of high explosives and other aromatics via a fluorescence quenching and enhancement mechanism.     

Calix[4]arene-based metal-organic frameworks: towards hierarchically porous materials

An upper rim-functionalised calix[4]arene dicarboxylic acid (H(2)caldc) has been used to prepare four metal-organic frameworks, three of which have been structurally characterised and shown to form two- or three-dimensional network structures. Simulations suggest that such networks are likely to display interesting selectivity to guest molecules.     

新型三维金属-有机骨架[Er2（HO-bdc）2（m-bdc）（phen）]·3H2O的水热合成及晶体结构（英文）

以5-羟基间苯二甲酸(HO-H2bdc)、5-甲基间苯二甲酸(m-H2bdc)和1,10-菲啰啉(phen)为配体,在水热条件下合成了饵金属-有机骨架[Er2(HO-bdc)2(m-bdc)(phen)].3H2O。通过X-射线单晶衍射仪测定其晶体结构,结果表明该化合物包含一个三维[Er2(HO-bdc)2(m-bdc)(phen)]框架,而结晶水分子位于其中。该化合物中丰富的氢键作用和1,10-菲啰啉芳香环之间的π-π堆积作用进一步稳固了其三维结构。     

Metal-organic frameworks with a three-dimensional ordered macroporous structure: dynamic photonic materials

Tuning MOFs: When a metal-organic framework (MOF) with an ordered three-dimensional macroporous structure is integrated into a film, the resulting materials have an additional optical element, which can be used as a general and effective signal transducer. This, in combination with the hierarchical pore structure, makes these films interesting dynamic photonic materials with potential applications in sensors.     

A robust, porous, cationic silver(i) 3,5-diphenyl-1,2,4-triazolate framework with a uninodal 4(9).6(6) net

The reactions of silver(i) salts with 3,5-diphenyl-1,2,4-triazole result in three-dimensional, porous, cationic metal-organic frameworks based on novel 6-connected, trigonal-prismatic, pentanuclear silver-triazolate clusters, interconnected by linear N-Ag-N linkers; this robust water- and organic-insoluble structure exhibits both nonpolar-solvent adsorption and anion-exchange properties.     

A three-dimensional porous metal-organic framework with the rutile topology constructed from triangular and distorted octahedral building blocks

The solvothermal reaction of zinc acetate dihydrate with 1,3,5-benzenetricarboxylic acid yields a three-dimensional porous metal-organic framework constructed from triangular and distorted octahedral building blocks, the framework of which can be described as a decorated rutile net.     

Structure and magnetism of a porous three-dimensional metal-organic framework based on planar tetranuclear copper(II) cluster units

A porous three-dimensional copper(II) metal-organic framework (MOF) {[Cu₂(tci)(OH)(pip)_0.5(H₂O)]·6H₂O} _n (1) [tci = tris (2-carboxyethyl)isocyanurate, pip = piperazine] has been generated under hydrothermal conditions at 120 °C. Single crystal X-ray diffraction reveals that the polymer exhibits a novel three-dimensional framework based on planar tetranuclear copper(II) cluster units. The variable temperature magnetic susceptibility data in the range 2–280 K show antiferromagnetic spin-spin coupling in the tetranuclear unit in complex 1. A theoretical fitting of the magnetic data gives J values of ?31.3 cm^?1, ?30.8 cm^?1, and 13.5 cm^?1.     

Molecular dynamics simulations of gas diffusion in metal-organic frameworks: argon in CuBTC

The class of coordination polymers known as metal-organic frameworks (MOFs) has three-dimensional porous structures that are considered as a promising alternative to zeolites and other nanoporous materials for catalysis, gas adsorption, and gas separation applications. In this paper, we present the first study of gas diffusion inside an MOF and compare the observed diffusion to known behaviors in zeolites. Using grand canonical Monte Carlo and equilibrium molecular dynamics, we calculate the adsorption isotherm and self-, corrected, and transport diffusivities for argon in the CuBTC metal-organic framework. Our results indicate that diffusion of Ar in CuBTC is very similar to Ar diffusion in silica zeolites in magnitude, concentration, and temperature dependence. This conclusion appears to apply to a broad range of MOF structures.     

Infusion of Variable Chemical Structure to Tune Stacking among Metal-Organic Layers in 2D Nano MOF

Thickness of two-dimensional (2D) metal-organic frameworks (MOFs) govern their intriguing functionalities. Primarily this thickness is controlled by the stacking between the metal-organic layers (MOL). It is observed that until now such modulating factors for stacking efficiency of MOL are not well studied. Here, we report a fundamental hypothesis to comprehend regulation of stacking efficiency among MOLs as a function of chemical structure of organic ligands (dicarboxylic acids and pillar linkers). This basically involves a series of isostructural three-dimensional (3D) MOFs which contain linkers of variable chemical nature that could be depillared to generate 2D stacked MOFs of different thickness. Depending on the linkers, we encountered the formation of single MOL to stacked multiple MOLs as evidenced from atomic force microscopic and other experimental analysis. The present study gives a concrete correlation between the stacking within 2D MOFs (from monolayer to multilayers), and their 3D counter parts, which may provide a thickness tuning pathway for 2D MOFs.