Diverse silver(i) sulfobenzoate coordination polymers and their recycling property as homogeneous catalyst in oxygenation of sulfide

RSC Advances ◽  
2014 ◽  
Vol 4 (28) ◽  
pp. 14691-14699 ◽  
Author(s):  
Ai-Qing Ma ◽  
Long-Guan Zhu
Keyword(s):  
Coordination Polymers ◽  
Chemical Properties ◽  
Homogeneous Catalyst ◽  
Benzene Rings ◽  
Variable Chemical

Four silver sulfobenzoate coordination polymers with bpmb ligands were prepared. The variable positions of sulfonate groups on benzene rings gave rise to different coordination polymers and variable chemical properties.

Impact of solid-state photochemical [2+2] cycloaddition on coordination polymers for diverse applications

2020 ◽  
Vol 49 (28) ◽  
pp. 9556-9563 ◽  
Author(s):  
Samim Khan ◽  
Basudeb Dutta ◽  
Mohammad Hedayetullah Mir
Keyword(s):  
Solid State ◽  
Coordination Polymers ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Physical And Chemical ◽  
Fine Tune ◽  
And Chemical Properties

This Frontier article highlights the advancement of [2+2] photocycloaddition reactions within coordination polymers to fine tune their diverse physical and chemical properties.

scholarly journals A Convenient Synthesis of Antimony Nanorods using 1,2,4,5-Benzenetetracarboxylic Acid

2019 ◽  
Vol 31 (6) ◽  
pp. 1301-1304
Author(s):  
NTAOTE DAVID SHOOTO
Keyword(s):  
Coordination Polymers ◽  
Chemical Properties ◽  
Carboxyl Groups ◽  
Physical And Chemical Properties ◽  
X Ray ◽  
Ideal Candidate ◽  
Convenient Synthesis ◽  
Physical And Chemical ◽  
Coordination Configuration ◽  
And Chemical Properties

1,2,4,5-Benzenetetracarboxylic acid (H4Btec) is an ideal candidate for the synthesis of new coordination polymers compounds because of its four carboxyl groups bridging moieties with antimony ions having distorted coordination configuration. This work reports a new compound of coordination polymer, namely, [Sb2(C4H4O6)2(Btec)(H2O)]n, [(C4H4O6)2 = tartrate and Btec4− = 1,2,4,5-benzenetetracarboxylic anion] has been synthesized under reflux. The physical and chemical properties of coordination polymers; Sb2(C4H4O6)2(Btec)(H2O) was affirmed by scanning electron microscope, Fourier transform infrared spectroscopy, X-ray powder diffraction, thermogravimetric analyses and photoluminescence spectroscopy.

Studies on some solodic soils in north-eastern Queensland. 1. Morphological and chemical characteristics

1970 ◽  
Vol 10 (44) ◽  
pp. 334 ◽  
Author(s):  
BJ Crack ◽  
RF Isbell
Keyword(s):  
Chemical Properties ◽  
Summer Rainfall ◽  
Sampled Data ◽  
Nitrogen And Phosphorus ◽  
North Eastern ◽  
Variable Chemical ◽  
Calcium Magnesium ◽  
Major Chemical ◽  
Low Nitrogen ◽  
Phosphorus Levels

Morphological and chemical data are presented for solodic and solodized-solonetz soils occurring in north-eastern Queensland under a strongly seasonal summer rainfall. Mean annual totals range from 26 in, to 70 in. The soils have slightly acid sandy to loamy A horizons, often strongly bleached, and abruptly underlain by hard dense clay R horizons which are strongly alkaline at depth. Profiles show variable chemical properties but many surface elements show relatively little variability within or between areas sampled. Data for such elements may be interpolated for sites within the area studied. Major chemical features are low nitrogen and phosphorus levels which show little variation between areas sampled. The exchangeable calcium : magnesium ratio of surface soils is narrow but values do not suggest deficiencies or imbalance. In the subsoils magnesium and sodium are the dominant exchangeable cations. Exchangeable and acid-extractable potassium values are variable in surface horizons, and data indicate sufficiency in the lower rainfall areas with likelihood of deficiency under higher rainfall. The soils have several adverse physical properties.

Defect-Free Chemical Functionalization of Magnetic Monolayers Based on Coordination Polymers

2018 ◽  
Author(s):  
Javier López-Cabrelles ◽  
Samuel Mañas-Valero ◽  
Iñigo J. Vitórica-Yrezábal ◽  
Pablo J. Bereciartúa ◽  
J. Alberto Rodríguez-Velamazán ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
2D Materials ◽  
Chemical Properties ◽  
Benzimidazole Derivatives ◽  
Synthetic Method ◽  
New Approach ◽  
Chemical Functionalization ◽  
Powerful Approach ◽  
Physical And Chemical ◽  
And Chemical Properties

<p>Chemical functionalization has demonstrated to be a powerful approach to tailor the physical and chemical properties of two-dimensional (2D) materials, to increase their processability and</p> <p>stability, to add new functionalities and, even, to create new 2D materials. However, this post synthetic method – which involves the anchoring of molecules on the surface of an exfoliated 2D crystal – inevitably leads to defective materials, which lack long-range structural order. If defect-free functionalized monolayers are required, a radically new approach needs to be developed. Here we present a pre-synthetic method based on coordination chemistry that affords the isolation of crystalline functionalized monolayers. This involves functionalization of the ligand prior to the formation of the 2D material. The concept is illustrated using layered coordination polymers formed by reacting various benzimidazole derivatives with ferrocene. This surface tuneability, together with the robust magnetic and mechanical properties of these 2D materials, make them exceptional candidates for studying the magnetism in the 2D limit, as well as for developing membranes for selective molecular sensing.</p>

scholarly journals Exploring physical and chemical properties in new multifunctional indium-, bismuth-, and zinc-based 1D and 2D coordination polymers

2018 ◽  
Vol 47 (6) ◽  
pp. 1808-1818 ◽  
Author(s):  
G. E. Gomez ◽  
R. F. D'vries ◽  
D. F. Lionello ◽  
L. M. Aguirre-Díaz ◽  
M. Spinosa ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Chemical Properties ◽  
Main Group ◽  
Group Element ◽  
Physical And Chemical Properties ◽  
Multifunctional Materials ◽  
Main Group Element ◽  
Physical And Chemical ◽  
And Chemical Properties

Main group element CPs are important compounds for the development of multifunctional materials.

scholarly journals Nanoscale Metamaterials: Meta-MOFs and Framework Materials with Anomalous Behavior

2019 ◽  
Author(s):  
François-Xavier Coudert ◽  
Jack D. Evans
Keyword(s):  
Coordination Polymers ◽  
Metal Organic Frameworks ◽  
Chemical Properties ◽  
Anomalous Behavior ◽  
Inorganic Materials ◽  
Covalent Organic Frameworks ◽  
Crystalline Materials ◽  
Framework Materials ◽  
Metal Organic ◽  
Structural Responses

As the number of framework materials known and characterized in the literature grows, it becomes apparent that they can carry properties rarely encountered in more conventional, dense inorganic materials. Among these materials with unusual physical or chemical properties are the ubiquitous metal–organic frameworks, covalent organic frameworks, dense coordination polymers, and molecular frameworks. Many can respond to stimulation by displaying structural responses and changes in properties that range from counter-intuitive to thermodynamically forbidden. In that, they share large similarities with metamaterials, which are engineered to generate properties not found in “normal” materials. We review here the surprising behavior of these meta-MOFs and other framework materials that display properties “beyond” (μετά) the boundaries of common crystalline materials.<br>

Three Cd(ii) coordination polymers constructed from a series of multidentate ligands derived from cyclotriphosphazene: synthesis, structures and luminescence properties

CrystEngComm ◽  
2018 ◽  
Vol 20 (25) ◽  
pp. 3535-3542 ◽  
Author(s):  
Xi Chen ◽  
Hong-Xia Dong ◽  
Hua-Nan Peng ◽  
Li-Ming Hong ◽  
Dan Luo ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Chemical Properties ◽  
Luminescence Properties ◽  
Multidentate Ligands

By utilizing three ligands derived from cyclotriphosphazene, three novel cadmium-based coordination polymers have been successfully synthesized and structurally characterized, which exhibit the corresponding photo-chemical properties.

Three AgI, CuI and CdII coordination polymers based on the new asymmetrical ligand 2-{4-[(1H-imidazol-1-yl)methyl]phenyl}-5-(pyridin-4-yl)-1,3,4-oxadiazole: syntheses, characterization and emission properties

2019 ◽  
Vol 75 (12) ◽  
pp. 1690-1697
Author(s):  
Guo-Xia Jin ◽  
Tian-Chao You ◽  
Jian-Ping Ma
Keyword(s):  
Metal Ions ◽  
Coordination Polymers ◽  
Organic Ligand ◽  
One Dimensional ◽  
Coordination Sites ◽  
Metal Atoms ◽  
Polymeric Chains ◽  
Benzene Rings ◽  
Polymeric Structures ◽  
Methyl Phenyl

The new asymmetrical organic ligand 2-{4-[(1H-imidazol-1-yl)methyl]phenyl}-5-(pyridin-4-yl)-1,3,4-oxadiazole (L, C17H13N5O), containing pyridine and imidazole terminal groups, as well as potential oxdiazole coordination sites, was designed and synthesized. The coordination chemistry of L with soft AgI, CuI and CdII metal ions was investigated and three new coordination polymers (CPs), namely, catena-poly[[silver(I)-μ-2-{4-[(1H-imidazol-1-yl)methyl]phenyl}-5-(pyridin-4-yl)-1,3,4-oxadiazole] hexafluoridophosphate], {[Ag(L)]PF6} n , catena-poly[[copper(I)-di-μ-iodido-copper(I)-bis(μ-2-{4-[(1H-imidazol-1-yl)methyl]phenyl}-5-(pyridin-4-yl)-1,3,4-oxadiazole)] 1,4-dioxane monosolvate], {[Cu2I2(L)2]·C4H8O2} n , and catena-poly[[[dinitratocopper(II)]-bis(μ-2-{4-[(1H-imidazol-1-yl)methyl]phenyl}-5-(pyridin-4-yl)-1,3,4-oxadiazole)]–methanol–water (1/1/0.65)], {[Cd(L)2(NO3)2]·2CH4O·0.65H2O} n , were obtained. The experimental results show that ligand L coordinates easily with linear AgI, tetrahedral CuI and octahedral CdII metal atoms to form one-dimensional polymeric structures. The intermediate oxadiazole ring does not participate in the coordination interactions with the metal ions. In all three CPs, weak π–π interactions between the nearly coplanar pyridine, oxadiazole and benzene rings play an important role in the packing of the polymeric chains.

Lead fractionation and bioaccessibility in contaminated soils with variable chemical properties

2010 ◽  
Vol 22 (4) ◽  
pp. 215-225 ◽  
Author(s):  
Sumathi K.M. Saminathan ◽  
Dibyendu Sarkar ◽  
Syam S. Andra ◽  
Rupali Datta
Keyword(s):  
Contaminated Soils ◽  
Chemical Properties ◽  
Variable Chemical

scholarly journals EFFECT OF ALTERNATIVE MULTINUTRIENT SOURCES ON SOIL CHEMICAL PROPERTIES

2015 ◽  
Vol 39 (1) ◽  
pp. 194-204 ◽  
Author(s):  
Vanessa Martins ◽  
Douglas Ramos Guelfi Silva ◽  
Giuliano Marchi ◽  
Maurício Cunha Almeida Leite ◽  
Éder de Souza Martins ◽  
...  
Keyword(s):  
Ultramafic Rock ◽  
Chemical Properties ◽  
Mining Waste ◽  
Soil Chemical Properties ◽  
High Price ◽  
Rock Powder ◽  
Nutrient Sources ◽  
Rock Mining ◽  
Variable Chemical ◽  
Alternative Sources

The current high price of potassium chloride and the dependence of Brazil on imported materials to supply the domestic demand call for studies evaluating the efficiency of alternative sources of nutrients. The aim of this work was to evaluate the effect of silicate rock powder and a manganese mining by-product, and secondary materials originated from these two materials, on soil chemical properties and on brachiaria production. This greenhouse experiment was conducted in pots with 5 kg of soil (Latossolo Vermelho-Amarelo distrófico - Oxisol). The alternative nutrient sources were: verdete, verdete treated with NH4OH, phonolite, ultramafic rock, mining waste and the proportion of 75 % of these K fertilizers and 25 % lime. Mixtures containing 25 % of lime were heated at 800 ºC for 1 h. These sources were applied at rates of 0, 150, 300, 450 and 600 kg ha-1 K2O, and incubated for 45 days. The mixtures of heated silicate rocks with lime promoted higher increases in soil pH in decreasing order: ultramafic rock>verdete>phonolite>mining waste. Applying the mining waste-lime mixture increased soil exchangeable K, and available P when ultramafic rock was incorporated. When ultramafic rock was applied, the release of Ca2+ increased significantly. Mining subproduct released the highest amount of Zn2+ and Mn2+ to the soil. The application of alternative sources of K, with variable chemical composition, altered the nutrient availability and soil chemical properties, improving mainly plant development and K plant uptake, and are important nutrient sources.

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