A series of new metal−organic frameworks, namely, [Ag(mapym)(suc)0.5·0.5H2O]n (1), [Ag2(mapym)2(glu)·1.5H2O]n (2), [Ag2(mapym)2(ipa)·2H2O]n (3), [Ag2(mapym)2(tpa)(H2O)]n (4), [Ag(dmapym)2(ox)0.5·H2O] (5), and [Ag(dmapym)(bbdc)0.5·0.5H2O]n (6) (mapym = 2-amino-4-methylpyrimidine, dmapym 2-amino-4,6-dimethylpyrimidine, H2suc succinic acid, H2glu glutaric H2ipa isophthalic H2tpa terephthalic H2ox oxalic H2bbdc 4,4-bibenzenedicarboxylic acid), have been synthesized structurally characterized....

Four mixed-ligand Ag(I) coordination complexes (CCs), namely, [Ag(cnpy)2(Hpta)] (1), [Ag2(cnpy)2(Hpta)2] (2), [Ag4(cnpy)2(pta)2(H2O)]n (3) and [Ag2(inta)2(pta)·3H2O]n (4), (cnpy = 4–cyanopyridine, H2pta phthalic acid, inta isonicotinamide) have been synthesized through a one-pot ultrasonic reaction of silver(I) oxide, cnpy under different pH values structurally characterized. Complexes 1 2 formed at lower (5.0 for 6.9 2) exhibit zero-dimensional (0D) mononuclear tetranuclear motifs,...

Two novel 3d-4d heterometallic coordination polymers {[Cu(3)(bipy)(3)(H(2)O)(5)][Ag(6)(mna)(6)]·11.5H(2)O}(n) (1) and {[Zn(3)(eda)(3)(H(2)O)(4)][Ag(6)(mna)(6)]·8H(2)O}(n) (2) were synthesized based on a hexanuclear silver(I) metalloligand by three-step synthetic method (bipy = 2, 2'-bipyridine, eda ethylenediamine H(2)mna 2-mercaptonicotinic acid). The photoluminescence behaviors of 1 2 also discussed.

Abstract By a facile coordination-based post-synthetic strategy, the high surface area MIL-101(Cr) nanoparticles was functionallized by grafting amine group of ethylenediamine (ED) on coordinatively unsaturated Cr(III) centers, yielding series ED-MIL-101(Cr)-based adsorbents and their application for adsorption U(VI) from aqueous solution were also studied. The obtained ED-functionallized samples with different ED contents characterized powder X-ray diffraction (PXRD), scanning electron...

Two mixed-ligand Ag(I) coordination polymers (CPs), namely, [Ag2(bipy)2(ox)·7H2O]n (1) and [Ag2(bipy)2(adip)·6H2O]n (2) (bipy = 4,4′-bipyridine, H2ox oxalic acid, H2adip adipic acid) have been synthesized structurally characterized. Complex 1 exhibits a three-dimensional (3D) framework constructed from ox pillared Ag−bipy sheets. 2 shows stairlike two-dimensional (2D) structure composed of adip linked double chains. Of particular interest, 1D C4 water chain novel T7(2) tape edge-sharing...

A novel uranyl-organic framework [(CH3)2NH2][UO2(TATAB)]·2DMF·4H2O (U-TATAB) was assembled through the solvothermal synthesis of UO2(CH3COO)2·2H2O and triazine tricarboxylate linker H3TATAB (H3TATAB = 4,4',4″-s-triazine-1,3,5-triyltri- p-aminobenzoate). It characterized by single-crystal X-ray diffraction, elemental analysis, IR, powder thermogravimetric microanalysis. is worth mentioning that U-TATAB exhibits an original arrangement structures with interesting topology. Structural analysis...

We successfully prepared and characterized a distinctive thorium-based MOF (metal–organic framework) Th-TTHA with thorium oxide wheel clusters under the conditions of solvothermal synthesis by utilizing nitrate semirigid triazine hexacarboxylic acid linker H6TTHA (H6TTHA = 1,3,5-triazine-2,4,6-triamine hexaacetic acid). To best our knowledge, is first assembled hexapod ligand H6TTHA. It worth mentioning that exhibits novel arrangement structure topology. has abundant adsorption sites such as...

The problem of pollution caused by highly toxic ions has become the focus global attention and attracted interest many researchers. However, microdetection using a metal–organic framework remains challenge. Here, we synthesized Bi-polycarboxylate organic (Bi-MOF) compound [Bi(BTC)(H2O)]·H2O constructed 1,3,5-benzenetricarboxylic acid. Structural analysis revealed that in our Bi-MOF structural unit, adjacent codimers {Bi2O18} are further joined C atoms H3BTC to form three-dimensional...

Hydrogen peroxide (H2O2) and hydroxyl radical (•OH) production during oxygenation of reduced iron (Fe(II)) natural organic matter (NOM) in the subsurface has been increasingly discovered, whereas effect C/Fe molar ratio Fe(II) NOM coexisting systems remains poorly understood. In this study, aqueous humic acid (HAred) mixture at different ratios (0-20) were oxygenated. Results show that both H2O2 •OH accumulation increased almost linearly with increase ratio, a more prominent high ratios. At...

Two homochiral enantiomers {(EMIM)[Zn(SIP)(IM)]}n (1a and 1b, EMIM = 1-ethyl-3-methylimidazolium) possessing chiral (10,3)-a topology constructed from an achiral rigid 5-sulfoisophthalate (SIP) ligand imidazole (IM) have been obtained by spontaneous resolution under ionothermal conditions. The show second-order nonlinear optical effects photoluminescence.

A novel mixed-valent Ag(I)/Ag(II) coordination polymer {[Ag(I)(2)Ag(II)(0.5)(SO(4))(HSO(4))(pyz)(2.5)]·H(2)O}(n) (1, pyz = pyrazine) was synthesized and characterized. The results show it presents semiconducting photoluminescent properties.

We prepared a rare thorium metal–organic framework (MOF) (Th-TATAB) with double-walled tetrahedral cage structure and giant unit cell volume of 43 513 Å3, which is the largest all reported thorium-based MOFs to our knowledge. The unique structural character allows MOF exhibit exceptional adsorption properties toward I2 dyes different charges. experimental results show that in cyclohexane solution absorption ability Th-TATAB can reach about 750 mg/g, especially removal efficiency (0.01 mol/L)...

Two mixed-ligand silver(I) coordination polymers (CPs) [Ag2(dmapym)2(suc)·H2O]n (1) and [Ag2(dmapym)2(bdc)·2H2O]n (2), (dmapym = 2-amino-4,6-dimethylpyrimidine, H2suc succinic acid, H2bdc 1,3-benzenedicarboxylic acid), were synthesized characterized. The structure of 1 presents an argentophilic interaction enhanced 2-crossing [2]-catenane motif formed between pairs parallel interpenetrating 2D 44-sql nets. For 2, as the dicarboxylate changes from flexible to rigid V-shaped H2bdc, each highly...

A novel infinite 2D silver(I) phthalate coordination polymer (CP), {CH3CN⊂[Ag2(pta)]4·CH3CN}n, (1, H2pta = phthalic acid) was synthesized and characterized. The flowerpot-shaped cavity in the sheet accommodates a linear acetonitrile molecule through quadruplex Ag···Nacetonitrile interaction. Using H2O as solvent same preparative procedure, another CP 2, {[Ag2(pta)(H2O)]}n, isolated. Complex 2 is also but does not include any solvent-occupied cavity. comparative experiment shows that acts...

An ultrasonic reaction of Ag2O, 4,4′-bipyridine (bipy) and (2S, 3R)-3-amino-2-hydroxybutanoic acid (L-Thr) gives an unexpected Ag(I) supramolecular framework, {[Ag3(bipy)3(cahba)]·HCO3·10H2O}n (1), in which the 3R)-3-(carboxyamino)-2-hydroxybutanoic (H2cahba) is a carbamate derivative L-Thr, obtained via situ transformation amino group L-Thr into by means CO2 uptake.

Four novel 3d–4d heterometallic coordination complexes were synthesized based on a nonanuclear Ag(I) metallatecton by three-step synthetic method. The photoluminescence behaviors of 2–4 are also discussed.