Reactions between the tritopic pyrazole-based ligand 1,3,5-tris(1H-pyrazol-4-yl)benzene (H3BTP) and transition metal acetate salts in DMF afford microporous pyrazolate-bridged metal–organic frameworks of type M3(BTP)2·xsolvent (M = Ni (1), Cu, (2), Zn (3), Co (4)). Ab-initioX-ray powder diffraction methods were employed determining crystal structures these compounds, revealing 1 2 to exhibit an expanded sodalite-like framework with accessible cation sites, while 3 4 possess tetragonal...

In this communication, a series of observations and data analyses coherently confirms the suitability novel metal–organic framework (MOF) [Zn4(μ4-O)(μ4-4-carboxy-3,5-dimethyl-4-carboxy-pyrazolato)3] (1) in capture harmful volatile organic compounds (VOCs). It is worthy attention that 1, whose crystal structure resembles MOF-5, exhibits remarkable thermal, mechanical, chemical stability, as required if practical applications are sought. addition, it selectively captures VOCs (including models...

Tunable hydrophobicity: Efficient air filters for the protection against chemical warfare agents might be achieved by surface functionalization of pores in robust metal–organic frameworks (MOFs) with fluoroalkyl residues and precise control their pore size (see picture). These MOFs capture harmful volatile organic compounds even under extremely moist conditions (80 % relative humidity). As a service to our authors readers, this journal provides supporting information supplied authors. Such...

Two isoreticular series of pyrazolate-based 3D open metal-organic frameworks, MBDP_X, adopting the NiBDP and ZnBDP structure types [H(2)BDP = 1,4-bis(1H-pyrazol-4-yl)benzene], were synthesized with new tagged organic linkers H(2)BDP_X (X -NO(2), -NH(2), -OH). All MBDP_X materials have been characterized through a combination techniques. IR spectroscopy proved effective presence tags, while X-ray powder diffraction (XRPD) witnessed their nature. Simultaneous TG/DSC analyses (STA) demonstrated...

A new polycrystalline vapochromic polymorph of the one-dimensional copper bispyrazolate polymer reversibly and selectively absorbs a number small molecules; crystal structures anhydrous fully hydrated species, determined by powder diffraction methods, are markedly different despite their simple, fast, reversible interconversion.

H2, N2, CO, and CO2 are readily incorporated in the porous, 3D sodalitic frameworks of coordination polymers [ML2]n type, with M = Pd(II) or Cu(II) HL 2-hydroxypyrimidine 4-hydroxypyrimidine. The metal ion ligand functionalization modulate their sorption properties, making these materials suitable for gas storage separation purposes.

Two highly porous coordination polymers, containing rare octanuclear hydroxo-nickel clusters and long bis-pyrazolyl spacers, are shown to possess, after mild thermal treatment, lattice cavities up 72% of the total crystal volume.

A novel ultramicroporous coordination polymer, namely [Cu(F-pymo)2(H2O)1.25]n (1, F-pymo = 5-fluoropyrimidin-2-olate), has been prepared and structurally characterized. 1 displays a zeolitic gismondine (GIS) topology, with ca. 2.9 Å wide helical channels which, in the thermally activated counterpart (1'), account for 13% void volume are responsible observed selective solid−gas adsorption properties toward H2, N2, CO2. At 77 K 1' behaves as molecular sieve, selectively adsorbing H2 over...

Highly porous homoleptic Ni(bpb) and Zn(bpb) materials have been obtained by reaction of nickel(II) zinc(II) salts with the deprotonated form 1,4-(4-bispyrazolyl)benzene ligand (H2bpb). Ab-initio structure solution methods thermodiffractometry allowed determination their crystal structures, framework flexibility, thermal stability. The different stereochemical requirements Ni(II) Zn(II) ions induce, in Zn(bpb), rhombic square channels, respectively, accounting for 57 65% total cell volume....

Infinite pores! Three structurally and topologically distinct infinite coordination-polymer (ICP) materials are synthesized from 1,12-dihydroxycarbonyl-1,12-dicarba-closo-dodecaborane CoII salts (see image). All three have markedly different porosities and, consequently, N2, H2, CO2 uptakes. This work emphasizes the importance of morphological control in tailoring properties ICP structures. Detailed facts to specialist readers published as "Supporting Information". Such documents...

Copper(II) bisimidazolate affords five different polymorphs; of these, one was structurally characterized 40 years ago by standard single-crystal X-ray diffraction (Jarvis, J. A. J.; Wells, F. Acta Crystallogr. 1960, 13, 1027), while the remaining four, selectively prepared as pure polycrystalline phases, have been now studied powder (XRPD) methods. Of four new (blue, green, olive-green, and pink) three were solved ab initio XRPD technique refined Rietveld method, fourth phase (pink) could...

There are conflicting data in the literature regarding expression pattern of vascular matrix metalloproteinase (MMP) system and their inhibitors (TIMPs) human hypertension. The authors hypothesized that MMP-2, MMP-9, TIMP-1 would be abnormal hypertension, reflecting alterations extracellular (ECM) turnover. measured plasma levels activities 44 hypertensive patients controls. MMP-2 activity were significantly higher group (p < .0001). Significant increase was also observed for MMP-9 level...

The structural, emissive, and nonlinear optical properties of new CuI adducts with para-substituted trans-stilbazolic pyridinic ligands are reported. Single-crystal X-ray diffraction results indicate that the para-substituent on organic ligand greatly influences structural motif by its steric (tert-butyl), electronic/steric (dimethylamino), or bridging-donor (cyano) so two absolutely motifs, polymeric oligomeric, found when trans-stilbazole pyridine carry a dimethylamino group in...

The reaction of [(cymene)RuCl(2)](2) with K(2)Hoxonate (H(3)oxonic = 4,6-dihydroxy-2-carboxy-1,3,5-triazine acid) in methanol leads to the formation dinuclear half-sandwich ruthenium(II) complex [(cymene)(2)Ru(2)(mu-Hoxonato)Cl(2)] (1a). Removal chloride ligands 1a by treatment AgCF(3)SO(3) yields [(cymene)(2)Ru(2)(mu-Hoxonato)(CF(3)SO(3))(2)] (1b), which, upon posterior N,N'-linkers (L 4,4'-bipyridine (4,4'-bpy), 4,7-phenantroline (4,7-phen)), gives rise tetranuclear open boxes...

The reaction of the rigid spacer 4,4′-bipyrazole (H2BPZ) with late transition metals, either following conventional routes or under solvothermal conditions, afforded coordination polymers [M(BPZ)]·Solv (M = Zn, 1; Co, 2; Cd, 3; Hg, 4; Cu, 5; Ni, 6; Pd, 7; Solv DMF, MeCN, 5 and H2O, 7), [Cu(H2BPZ)2(NO3)2] (8), [Cd(H2BPZ)(CH3COO)2] (9). State-of-the-art laboratory powder diffraction methods allowed to disclose isomorphous character 1 2, as well 6, which feature 3D porous networks containing 1D...

Abstract A fluorous metal–organic framework [Cu(FBTB)(DMF)] (FMOF‐3) [H 2 FBTB = 1,4‐bis(1‐ H ‐tetrazol‐5‐yl)tetrafluorobenzene] and nonporous coordination polymer [Ag (FBTB)] (FN‐PCP‐1) are synthesized characterized as for their structural, thermal, textural properties. Together with the corresponding nonfluorinated analogues lc‐[Cu(BTB)(DMF)] (BTB)], two known (super)hydrophobic MOFs, FMOF‐1 ZIF‐8, they have been investigated low‐dielectric constant (low‐κ) materials under dry humid...

This work focuses on the impact of covalent organic frameworks' (COFs) pore flexibility in adsorption and separation benzene cyclohexane. With this aim, we have selected imine-linked 3D COFs COF-300 LZU-111 as examples flexible rigid frameworks, respectively. Optimized syntheses at room temperature or solvothermal conditions enabled us to selectively isolate narrow-pore form (COF-300-rt) a mixture larger-pore (COF-300-st), respectively, with different textural properties (BET specific...

Understanding adsorption processes at the molecular level, with multi-technique approaches, is nowadays frontier of porous materials research. In this work it shown that a proper data treatment, in situ high-resolution powder X-ray diffraction (HR-PXRD) variable temperature and gas pressure can reveal atomic details accommodation sites, framework dynamics as well thermodynamic information (isosteric heat adsorption) CO

Abstract The capacity to discern the highest temperature that an object is subjected a crucial diagnostic tool. Consequently, pursuit of materials enable luminescence‐based investigation thermal history with high sensitivity great importance from functional applications standpoint. This study aims present multiparametric phosphor based on luminescent coordination polymer [Eu(BTC)(H 2 O) 6 ] [ Eu(BTC)‐1 , where H 3 BTC = 1,3,5‐benzenetricarboxylic acid]. progressive dehydration undergoes as...

Abstract The two Ce IV MOFs [Ce 6 O 4 (OH) ( TzTz ) ] Ce_TzTz and PyPy 2 Ce_TzTz_PyPy ; H = [2,2′‐bithiazole]‐5,5′‐dicarboxylic acid, 2,2′‐bipyridine‐5,5′‐dicarboxylic acid) are prepared starting from a pre‐formed glycinate‐capped cluster. N isotherms collected at 77 K revealed BET specific surface areas of 1136 238 m g −1 , respectively. Their CO adsorption capacity is assessed T 273 298 p 1 bar. shows the highest gas uptake (7.9 9.7 wt% 11.5 12.5 for O, respectively). More interestingly,...

Mixed M(II)/M(III) metal oxalates, as "stripes" connected through strong hydrogen bonding by para-dimethylaminobenzaldeide (DAMBA) and water, form an organic-inorganic 2D network that enables segregation in layers of the cationic organic NLO-phore trans-4-(4-dimethylaminostyryl)-1-methylpyridinium, [DAMS+]. The crystalline hybrid materials obtained have general formula [DAMS]4[M2M'(C2O4)6].2DAMBA.2H2O (M = Rh, Fe, Cr; M' Mn, Zn), their overall three-dimensional packing is non-centrosymmetric...

The novel porous [{M(F-pymo)(2)}(n)]2.5n H(2)O coordination networks (M=Co, Zn; F-pymo=5-fluoropyrimidin-2-olate), possessing sodalitic topology, have been synthesised and structurally characterised by means of powder diffraction methods. Thermodiffractometry demonstrated their plasticity: when heated up to 363 K, they reversibly transform into three-dimensional dehydrated [{M(F-pymo)(2)}(n)] species, with significantly different lattice parameters. Further heating induces irreversible...

In polymeric composite thin films it is possible to translate elastic elongations of the film into reversible nanoscale deformations soft organic-crystal components, leading with extreme sensitivity strain changes durable, fast, and completely responses. Simple prototypes (see image), demonstrate that these sensors are highly promising for a wide range applications.