Log in

Relevant bibliographies by topics / Anion / Journal articles

To see the other types of publications on this topic, follow the link: Anion.

Journal articles on the topic 'Anion'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Anion.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Talanov, M. V., V. B. Shirokov, and V. M. Talanov. "Anion order in perovskites: a group-theoretical analysis." Acta Crystallographica Section A Foundations and Advances 72, no. 2 (2016): 222–35. http://dx.doi.org/10.1107/s2053273315022147.

Full text

Abstract:

Anion ordering in the structure of cubic perovskite has been investigated by the group-theoretical method. The possibility of the existence of 261 ordered low-symmetry structures, each with a unique space-group symmetry, is established. These results include five binary and 14 ternary anion superstructures. The 261 idealized anion-ordered perovskite structures are considered as aristotypes, giving rise to different derivatives. The structures of these derivatives are formed by tilting ofBO6octahedra, distortions caused by the cooperative Jahn–Teller effect and other physical effects. Some deri

APA, Harvard, Vancouver, ISO, and other styles

2

Wilkinson, Hazel S., and William T. A. Harrison. "Hexane-1,6-diammonium bis(dihydrogenarsenate): infinite anionic layers containing R 6 6(24) loops." Acta Crystallographica Section E Structure Reports Online 63, no. 3 (2007): m902—m904. http://dx.doi.org/10.1107/s1600536807007672.

Full text

Abstract:

The title compound, C6H18N2 2+·2H2AsO4 −, contains a network of doubly protonated centrosymmetric hexane-1,6-diammonium cations and dihydrogenarsenate anions. These species interact by way of cation-to-anion N—H...O and anion-to-anion O—H...O hydrogen bonds, the latter leading to infinite sheets of the H2AsO4 − anions.

APA, Harvard, Vancouver, ISO, and other styles

3

Attiogbe, Francis K., Samar K. Bose, Wei Wang, Alastair McNeillie, and Raymond C. Francis. "The peroxymonocarbonate anions as pulp bleaching agents. Part 1. Results with lignin model compounds and chemical pulps." BioResources 5, no. 4 (2010): 2208–20. http://dx.doi.org/10.15376/biores.5.4.2208-2220.

Full text

Abstract:

The peroxymonocarbonate mono-anion (HCO4─) is generated when the bicarbonate anion is added to a H2O2 solution. The mono-anion is believed to have a pKa value of ca. 10 and as such would start dissociating to the di-anion (CO42─) at pH ca. 8. The mono-anion should demonstrate electrophilic properties, while the di-anion should be a nucleophile. In an alkaline, non-sulfur pulping process such as soda/AQ, Na2CO3 could be obtained from the chemical recovery system and carbonated with CO2 from a flue gas stream to produce NaHCO3. In such a case only H2O2 would need to be purchased to generate the

APA, Harvard, Vancouver, ISO, and other styles

4

Peñas-Sanjuán, Antonio, Celeste García-Gallarín, María L. Godino-Salido, Rafael López-Garzón, Michele Melchionna, and Manuel Melguizo. "Carbon-Supported Hyperbranched Polyethyleneimines: Exploring into Polyamine/Anion Interactions to Design Efficient Polymer-Based Energy and Scavenger Materials." Polymers 17, no. 6 (2025): 786. https://doi.org/10.3390/polym17060786.

Full text

Abstract:

The anion-complexation mechanism and anion-adsorption capacity of a hybrid material based on hyperbranched polyethyleneimine (HBPEI) covalently bonded onto an activated carbon (AC) is presented. The anion-scavenger behavior of this hybrid material toward CrO42−, PO43−, AsO43− and HgCl42− was explored by direct potentiometric and adsorption measurements, which revealed a novel approach to predict the interactions between the supported polymeric complexing units and the different anions. The results were analyzed by considering the reactivity data of the HBPEI/anion (HBPEI free in solution) and

APA, Harvard, Vancouver, ISO, and other styles

5

Parthé, Erwin. "Crystal chemical information to be obtained from the bond-number equality concept." Acta Crystallographica Section B Structural Science 62, no. 2 (2006): 335–37. http://dx.doi.org/10.1107/s0108768106003065.

Full text

Abstract:

Based on the bond-number equality concept an equation is derived for anion complexes of normal valence compounds with triangularly and/or tetrahedrally coordinated central atoms and anions having one, two, three and four bonds to central atoms: %Δ = 4 − (n/m′) × [2 − %A [1] + %A [3] + 2 × %A [4]]. %Δ is the ratio of the number of central atoms with triangular anion coordination to the sum of all central atoms in the anion complex. n/m′ is the ratio of the number of all A anions to the number of all central atoms C′ in the anion complex. %A [1] is the ratio of the number of anions with one bond

APA, Harvard, Vancouver, ISO, and other styles

6

Sun, Jing, Qing Shan Li, Wei Hong, Biao Zhan, Guo Wei Wang, and Guang Zhong Xing. "The Two-Step Process for the Production of Anion Acrylic Fiber." Applied Mechanics and Materials 320 (May 2013): 615–18. http://dx.doi.org/10.4028/www.scientific.net/amm.320.615.

Full text

Abstract:

This article describes the preparation process of the anion acrylic and its test. In this study, using natural mineral nanomaterials prepared anion additives, using a two-step prepared anion acrylic fiber. Has been tested, the anion acrylic the indicators are good, the anion release can reach 1430 anions / cm3, and can be widely used in clothing, textile, medical and other fields.

APA, Harvard, Vancouver, ISO, and other styles

7

Schefe, C. R., M. Watt, W. J. Slattery, and P. M. Mele. "Organic anions in the rhizosphere of Al-tolerant and Al-sensitive wheat lines grown in an acid soil in controlled and field environments." Soil Research 46, no. 3 (2008): 257. http://dx.doi.org/10.1071/sr07139.

Full text

Abstract:

Several sampling methods were investigated for the quantification of organic anions in the rhizosphere of Al-tolerant (ET8) and Al-sensitive (ES8) wheat plants in soil systems. Controlled environment studies used anion exchange membranes to collect rhizosphere organic anions (from root tips and mature regions of nodal roots) from ET8 and ES8 plants at the 6-leaf stage in a glasshouse environment. Using the anion exchange membranes, a selection of organic anions were detected on the tips and mature regions of roots, with ET8 and ES8 having similar rhizosphere organic anion profiles. The field e

APA, Harvard, Vancouver, ISO, and other styles

8

Wilkinson, Hazel S., and William T. A. Harrison. "2-Methylpiperazinium bis(dihydrogenarsenate)." Acta Crystallographica Section E Structure Reports Online 63, no. 3 (2007): m900—m901. http://dx.doi.org/10.1107/s1600536807008392.

Full text

Abstract:

The title compound, C5H14N2 2+·2H2AsO4 −, contains a network of centrosymmetric doubly protonated 2-methylpiperazinium cations, showing disorder of the methyl group, accompanied by dihydogenarsenate anions. The component species interact by way of cation-to-anion N—H...O and anion-to-anion O—H...O hydrogen bonds, the latter leading to infinite sheets of the H2AsO4 − anions containing R 6 6(24) supramolecular loops.

APA, Harvard, Vancouver, ISO, and other styles

9

Cervera, Maria, and Jordi Marquet. "Effects of superoxide anion generated from aromatic radical anions produced in nucleophilic aromatic photosubstitution reactions." Canadian Journal of Chemistry 76, no. 6 (1998): 966–69. http://dx.doi.org/10.1139/v98-044.

Full text

Abstract:

Superoxide anion is generated from aromatic radical anions produced in nucleophilic aromatic photosubstitutions when the reactions are carried out in non-deoxygenated solutions of polar aprotic solvents. Superoxide anion thus generated displaces cyanide anion from acetonitrile and benzyl cyanide, ethoxide anion from ethyl acetate, and methanesulfenate anion from dimethyl sulfoxide. Hence, non-deoxygenated polar aprotic solvents should be avoided in nucleophilic aromatic photosubstitution reactions.Key words: superoxide, fluoride, nucleophilic aromatic photosubstitution.

APA, Harvard, Vancouver, ISO, and other styles

10

Li, Lei, Yu-Jian Hong, Dong-Yang Chen, Wang-Chuan Xiao та Mei-Jin Lin. "Anion–π interactions in lithium–organic redox flow batteries". Chemical Communications 55, № 16 (2019): 2364–67. http://dx.doi.org/10.1039/c8cc09834d.

Full text

Abstract:

The interactions between the electrolyte anions and electron-deficient redox-active organic molecules (anion–π interactions) have strong influences on the battery properties due to the anion–π-induced formation of radical anions or sandwich-like aggregates.

APA, Harvard, Vancouver, ISO, and other styles

11

Maslowska-Jarzyna, Krystyna, Maria L. Korczak, Jakub A. Wagner, and Michał J. Chmielewski. "Carbazole-Based Colorimetric Anion Sensors." Molecules 26, no. 11 (2021): 3205. http://dx.doi.org/10.3390/molecules26113205.

Full text

Abstract:

Owing to their strong carbazole chromophore and fluorophore, as well as to their powerful and convergent hydrogen bond donors, 1,8-diaminocarbazoles are amongst the most attractive and synthetically versatile building blocks for the construction of anion receptors, sensors, and transporters. Aiming to develop carbazole-based colorimetric anion sensors, herein we describe the synthesis of 1,8-diaminocarbazoles substituted with strongly electron-withdrawing substituents, i.e., 3,6-dicyano and 3,6-dinitro. Both of these precursors were subsequently converted into model diamide receptors. Anion bi

APA, Harvard, Vancouver, ISO, and other styles

12

Yamuna, Thammarse S., Jerry P. Jasinski, Manpreet Kaur, Brian J. Anderson, and H. S. Yathirajan. "5-(4-Fluorophenyl)-2H-pyrazol-1-ium 2,2,2-trifluoroacetate." Acta Crystallographica Section E Structure Reports Online 70, no. 4 (2014): o429—o430. http://dx.doi.org/10.1107/s1600536814005200.

Full text

Abstract:

The title salt, C9H8FN2+·C2F3O2−, crystallizes with two independent cations (AandB) and two independent anions (CandD) in the asymmetric unit. In the cations, the dihedral angles between the benzene and pyrazolium rings are 23.7 (3)° in cationAand 1.8 (8)° in cationB. In the crystal, each anion links to the two cationsviaN—H...O hydrogen bonds, forming a U-shaped unit with anR44(14) ring motif. These U-shaped units stack along theaaxis and are linkedviaC—H...O and C—H...F hydrogen bonds, forming slabs lying parallel to (100). Within the slabs there are π–π interactions between the pyrazolium r

APA, Harvard, Vancouver, ISO, and other styles

13

Sekine, Takashi, Hiroki Miyazaki, and Hitoshi Endou. "Molecular physiology of renal organic anion transporters." American Journal of Physiology-Renal Physiology 290, no. 2 (2006): F251—F261. http://dx.doi.org/10.1152/ajprenal.00439.2004.

Full text

Abstract:

Recent advances in molecular biology have identified three organic anion transporter families: the organic anion transporter (OAT) family encoded by SLC22A, the organic anion transporting peptide (OATP) family encoded by SLC21A ( SLCO), and the multidrug resistance-associated protein (MRP) family encoded by ABCC. These families play critical roles in the transepithelial transport of organic anions in the kidneys as well as in other tissues such as the liver and brain. Among these families, the OAT family plays the central role in renal organic anion transport. Knowledge of these three families

APA, Harvard, Vancouver, ISO, and other styles

14

Salhany, James M. "Anion binding characteristics of the band 3 / 4,4'-dibenzamidostilbene-2,2'-disulfonate binary complex: Evidence for both steric and allosteric interactions." Biochemistry and Cell Biology 77, no. 6 (1999): 543–49. http://dx.doi.org/10.1139/o99-061.

Full text

Abstract:

A novel kinetic approach was used to measure monovalent anion binding to better define the mechanistic basis for competition between stilbenedisulfonates and transportable anions on band 3. An anion-induced acceleration in the release of 4,4prime-dibenzamidostilbene-2,2prime-disulfonate (DBDS) from its complex with band 3 was measured using monovalent anions of various size and relative affinity for the transport site. The K1/2 values for anion binding were determined and correlated with transport site affinity constants obtained from the literature and the dehydrated radius of each anion. The

APA, Harvard, Vancouver, ISO, and other styles

15

Li, Qing Shan, and Ming Shuang Xu. "Preparation and Functionality Research of Anion Functional Fabrics." Advanced Materials Research 178 (December 2010): 216–19. http://dx.doi.org/10.4028/www.scientific.net/amr.178.216.

Full text

Abstract:

In order to provide scientific proof to anion functional fabrics application research in textile domain, in this article, anion functional fabrics were prepared, the anion generating capacity was determined and the effect of anion fabrics and mice BLA after exercise were first studied. The anion generating capacity shows that: due to the adding of anion function powders to function fabrics, the anion amount released by function fabrics is apparently higher than common fabrics. Washing can not significantly reduce the anion amount of function fabrics releasing. These can indicate that the funct

APA, Harvard, Vancouver, ISO, and other styles

16

Yan, Liwei, Ankur Saha, Wei Zhao, et al. "Recognition competes with hydration in anion-triggered monolayer formation of cyanostar supra-amphiphiles at aqueous interfaces." Chemical Science 13, no. 15 (2022): 4283–94. http://dx.doi.org/10.1039/d2sc00986b.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Weil, Matthias, Owen P. Missen, and Stuart J. Mills. "Dimorphism of [Bi₂O₂(OH)](NO₃) – the ordered Pna2₁ structure at 100 K." Acta Crystallographica Section E Crystallographic Communications 79, no. 12 (2023): 1223–27. http://dx.doi.org/10.1107/s205698902301023x.

Full text

Abstract:

The re-investigation of [Bi2O2(OH)](NO3), dioxidodibismuth(III) hydroxide nitrate, on the basis of single-crystal X-ray diffraction data revealed an apparent structural phase transition of a crystal structure determined previously (space group Cmc21 at 173 K) to a crystal structure with lower symmetry (space group Pna21 at 100 K). The Cmc21 → Pna21 group–subgroup relationship between the two crystal structures is klassengleiche with index 2. In contrast to the crystal structure in Cmc21 with orientational disorder of the nitrate anion, disorder does not occur in the Pna21 structure. Apart from

APA, Harvard, Vancouver, ISO, and other styles

18

Smith, Stephen S., Erich D. Steinle, Mark E. Meyerhoff, and David C. Dawson. "Cystic Fibrosis Transmembrane Conductance Regulator." Journal of General Physiology 114, no. 6 (1999): 799–818. http://dx.doi.org/10.1085/jgp.114.6.799.

Full text

Abstract:

The cystic fibrosis transmembrane conductance regulator (CFTR) Cl channel exhibits lyotropic anion selectivity. Anions that are more readily dehydrated than Cl exhibit permeability ratios (PS/PCl) greater than unity and also bind more tightly in the channel. We compared the selectivity of CFTR to that of a synthetic anion-selective membrane [poly(vinyl chloride)–tridodecylmethylammonium chloride; PVC-TDMAC] for which the nature of the physical process that governs the anion-selective response is more readily apparent. The permeability and binding selectivity patterns of CFTR differed only by a

APA, Harvard, Vancouver, ISO, and other styles

19

Kovanda, František, Eva Kovácsová, and David Koloušek. "Removal of Anions from Solution by Calcined Hydrotalcite and Regeneration of Used Sorbent in Repeated Calcination-Rehydration-Anion Exchange Processes." Collection of Czechoslovak Chemical Communications 64, no. 9 (1999): 1517–28. http://dx.doi.org/10.1135/cccc19991517.

Full text

Abstract:

Synthetic hydrotalcite calcined at 350-550 °C was used for the removal of arsenate, chromate, and vanadate ions from water solutions. The initial anion concentrations were 0.002 mol l-1. The sorption isotherms were measured at 20 °C and at neutral pH. The Langmuir adsorption isotherm was used for the sorption capacity evaluation. The ability of the calcined hydrotalcite to remove the anions from solution decreased in the order of vanadate - arsenate - chromate. The hydrotalcite calcined at 450 °C exhibited the best sorption ability for all the anions. The sorbed anions were released by anion e

APA, Harvard, Vancouver, ISO, and other styles

20

Franz, Jan, and Francesco Antonio Gianturco. "Investigation of rotational state-changing collisions of C2N− ions with helium." Proceedings of the International Astronomical Union 15, S350 (2019): 443–44. http://dx.doi.org/10.1017/s1743921319007580.

Full text

Abstract:

AbstractThe cross sections for rotational inelastic collisions between atoms and a molecular anion can be very large, if the anion has a dipole moment. This makes molecular anions very efficient in cooling atomic gases. We address rotational inelastic collisions of Helium atoms with the molecular anion C2N–. Here we present preliminary calculations of the potential energy surface.

APA, Harvard, Vancouver, ISO, and other styles

21

González-Ruiz, Víctor, Ángel Cores, M. Mar Caja, et al. "Fluorescence Sensors Based on Hydroxycarbazole for the Determination of Neurodegeneration-Related Halide Anions." Biosensors 12, no. 3 (2022): 175. http://dx.doi.org/10.3390/bios12030175.

Full text

Abstract:

The environmental presence of anions of natural origin or anthropogenic origin is gradually increasing. As a tool to tackle this problem, carbazole derivatives are an attractive gateway to the development of luminescent chemosensors. Considering the different mechanisms proposed for anion recognition, the fluorescence properties and anion-binding response of several newly synthesised carbazole derivatives were studied. Potential anion sensors were designed so that they combined the native fluorescence of carbazole with the presence of hydrogen bonding donor groups in critical positions for ani

APA, Harvard, Vancouver, ISO, and other styles

22

Schifferer, Lukas, Martin Stinglhamer, Kirandeep Kaur, and Olga García Macheño. "Halides as versatile anions in asymmetric anion-binding organocatalysis." Beilstein Journal of Organic Chemistry 17 (September 1, 2021): 2270–86. http://dx.doi.org/10.3762/bjoc.17.145.

Full text

Abstract:

This review intends to provide an overview on the role of halide anions in the development of the research area of asymmetric anion-binding organocatalysis. Key early elucidation studies with chloride as counter-anion confirmed this type of alternative activation, which was then exploited in several processes and contributed to the advance and consolidation of anion-binding catalysis as a field. Thus, the use of the halide in the catalyst–anion complex as both a mere counter-anion spectator or an active nucleophile has been depicted, along with the new trends toward additional noncovalent cont

APA, Harvard, Vancouver, ISO, and other styles

23

Schifferer, Lukas, Martin Stinglhamer, Kirandeep Kaur, and Mancheño Olga García. "Halides as versatile anions in asymmetric anion-binding organocatalysis." Beilstein J. Org. Chem. 17 (September 1, 2021): 2270–86. https://doi.org/10.3762/bjoc.17.145.

Full text

Abstract:

This review intends to provide an overview on the role of halide anions in the development of the research area of asymmetric anion-binding organocatalysis. Key early elucidation studies with chloride as counter-anion confirmed this type of alternative activation, which was then exploited in several processes and contributed to the advance and consolidation of anion-binding catalysis as a field. Thus, the use of the halide in the catalyst-anion complex as both a mere counter-anion spectator or an active nucleophile has been depicted, along with the new trends toward additional non-covalent con

APA, Harvard, Vancouver, ISO, and other styles

24

Gonfa, G., M. A. Bustam, T. Murugesan, Z. Man, and M. I. Abdul Mutalib. "Thermophysical Properties of Ionic Liquid with Thiocyanate and Dicynamide Anions." Key Engineering Materials 594-595 (December 2013): 953–57. http://dx.doi.org/10.4028/www.scientific.net/kem.594-595.953.

Full text

Abstract:

In this work, density and viscosity of ionic liquids with dicynamide and thiocyanate anion were obtained. The thermal expansion coefficient values were obtained from the experimental density values. The density and viscosity of the ionic liquids depends on the nature of the cations. The density of the ionic liquids increases in the order of [BMIM]+ < [AMI+ < [BzMI+ < [HEMI+ for dicynamide anion. Both for thiocyanate and dicynamide anions the viscosity values increase in the order of [BMI+ < [AMI+ < [BMI+ < [HEMI+. Moreover, viscosity values of ionic liquids with dicynamide an

APA, Harvard, Vancouver, ISO, and other styles

25

Bali, Atul, and Roopa Naik. "Pseudo Metabolic Acidosis in the Setting of Hypertriglyceridemia: A Case Report." Internal Medicine – Open Journal 4, no. 1 (2020): 1–2. http://dx.doi.org/10.17140/imoj-4-111.

Full text

Abstract:

Low serum bicarbonate, with or without an elevated anion gap, can indicate metabolic acidosis. High anion gap metabolic acidosis is due to the unmeasured anions. Hypertriglyceridemia can also be associated with spuriously low serum bicarbonate levels due to lab interference. We present a 44-year-old woman who presented with anion gap metabolic acidosis in the presence of severe hypertriglyceridemia

APA, Harvard, Vancouver, ISO, and other styles

26

Mair, Sunil, Jeffrey Smith, Donald J. Siegel, W. Craig Carter, and Yet-Ming Chiang. "Rotational Behavior Analysis of Cluster Anions in Solid-State Electrolytes via MD Simulation." ECS Meeting Abstracts MA2024-02, no. 8 (2024): 1055. https://doi.org/10.1149/ma2024-0281055mtgabs.

Full text

Abstract:

Solid-state batteries (SSBs) have the potential to bring about dramatic increases in safety and performance compared to current liquid electrolyte systems, allowing for electrification of crucial sectors such as transportation as well as development of novel device architectures for consumer electronics. Finding a suitable solid-state electrolyte remains a key challenge in the path to realization of SSBs, and finding candidate materials that exhibit sufficient ionic conductivity alongside the many other materials properties required of a solid-state electrolyte is the crux of this challenge. W

APA, Harvard, Vancouver, ISO, and other styles

27

Kim, Hee-Joon. "Assembly of Sn(IV)-Porphyrin Cation Exhibiting Supramolecular Interactions of Anion···Anion and Anion···π Systems". Molbank 2022, № 4 (2022): M1454. http://dx.doi.org/10.3390/m1454.

Full text

Abstract:

Trans-diaqua[meso-tetrakis(4-pyridyl)porphyrinato]Sn(IV) dinitrate complexes were assembled in a two-dimensional manner via hydrogen bonding between aqua ligands and pyridyl substituents. Interestingly, this supramolecular assembly was accompanied by unconventional noncovalent interactions, such as anion···anion and anion···π interactions, which were confirmed by X-ray crystallographic analysis. Two nitrate anions close to 2.070 Å were constrained in a confined space surrounded by four hydrogen-bonded Sn(IV)-porphyrin cations. The nitrate anion was also 3.433 Å away from the adjacent pyrrole r

APA, Harvard, Vancouver, ISO, and other styles

28

Kellum, J. A., R. Bellomo, D. J. Kramer, and M. R. Pinsky. "Hepatic anion flux during acute endotoxemia." Journal of Applied Physiology 78, no. 6 (1995): 2212–17. http://dx.doi.org/10.1152/jappl.1995.78.6.2212.

Full text

Abstract:

We sought to determine the role the liver might play in the regulation of anion-cation balance during both stable baseline conditions and acute endotoxemia. Ten pentobarbital sodium-anesthetized dogs were instrumented at laparotomy with ultrasonic flow probes around the left renal artery, portal vein, and hepatic artery, and catheters were inserted into the hepatic vein, portal vein, pulmonary artery, left renal vein, and abdominal aorta. Measurements were obtained from each site at baseline and 30-45 min after the intravenous infusion of endotoxin. The total anion flux across the liver was ca

APA, Harvard, Vancouver, ISO, and other styles

29

Griffin, M. Pamela. "Role for anions in pulmonary endothelial permeability." Journal of Applied Physiology 83, no. 2 (1997): 615–22. http://dx.doi.org/10.1152/jappl.1997.83.2.615.

Full text

Abstract:

Griffin, M. Pamela. Role for anions in pulmonary endothelial permeability. J. Appl. Physiol. 83(2): 615–622, 1997.—β-Adrenergic stimulation reduces albumin permeation across pulmonary artery endothelial monolayers and induces changes in cell morphology that are mediated by Cl− flux. We tested the hypothesis that anion-mediated changes in endothelial cells result in changes in endothelial permeability. We measured permeation of radiolabeled albumin across bovine pulmonary arterial endothelial monolayers when the extracellular anion was Cl−, Br−, I−, F−, acetate (Ac−), gluconate (G−), and propio

APA, Harvard, Vancouver, ISO, and other styles

30

Franciolini, F., and W. Nonner. "A multi-ion permeation mechanism in neuronal background chloride channels." Journal of General Physiology 104, no. 4 (1994): 725–46. http://dx.doi.org/10.1085/jgp.104.4.725.

Full text

Abstract:

Unitary current/voltage relationships of background Cl channels of rat hippocampal neurons were determined for varied gradients and absolute concentrations of NaCl. The channels revealed permeabilities for both Cl and Na ions. A hyperlinear increase of unitary conductance, observed for a symmetrical increase of salt concentration from 300 and 600 mM, indicated a multi-ion permeation mechanism. A variety of kinetic models of permeation were tested against the experimental current/voltage relationships. Models involving a pore occupied by mixed complexes of up to five ions were necessary to repr

APA, Harvard, Vancouver, ISO, and other styles

31

Xie, Huifang, and Ming Wah Wong. "Computational Design of Thiourea-based Cyclophane Sensors for Small Anions." Australian Journal of Chemistry 65, no. 3 (2012): 303. http://dx.doi.org/10.1071/ch11389.

Full text

Abstract:

The host–guest binding properties of a tri-thiourea cyclophane receptor (1) with several common anions have been investigated using density functional theory (DFT) and molecular dynamics calculations. Receptor 1 is predicted to be an effective receptor for binding small halogen and Y-shaped (NO3– and AcO–) anions in the gas phase, cyclohexane and chloroform. The calculated order of anion binding affinity for the receptor 1 in chloroform is F– > Cl– > AcO– > NO3– >Br– > H2PO4– > HSO4–. The binding free energies are strongly influenced by a dielectric solvent medium. The struct

APA, Harvard, Vancouver, ISO, and other styles

32

Brown, J. C., R. K. Packer, and M. A. Knepper. "Role of organic anions in renal response to dietary acid and base loads." American Journal of Physiology-Renal Physiology 257, no. 2 (1989): F170—F176. http://dx.doi.org/10.1152/ajprenal.1989.257.2.f170.

Full text

Abstract:

Bicarbonate is formed when organic anions are oxidized systemically. Therefore, changes in organic anion excretion can affect systemic acid-base balance. To assess the role of organic anions in urinary acid-base excretion, we measured urinary excretion in control rats, NaHCO3-loaded rats, and NH4Cl-loaded rats. Total organic anions were measured by the titration method of Van Slyke. As expected, NaHCO3 loading increased urine pH and decreased net acid excretion (NH4+ + titratable acid - HCO3-), whereas NH4Cl loading had the opposite effect. Organic anion excretion was increased in response to

APA, Harvard, Vancouver, ISO, and other styles

33

Lochmann, Christine, Thomas F. M. Luxford, Samanta Makurat, et al. "Low-Energy Electron Induced Reactions in Metronidazole at Different Solvation Conditions." Pharmaceuticals 15, no. 6 (2022): 701. http://dx.doi.org/10.3390/ph15060701.

Full text

Abstract:

Metronidazole belongs to the class of nitroimidazole molecules and has been considered as a potential radiosensitizer for radiation therapy. During the irradiation of biological tissue, secondary electrons are released that may interact with molecules of the surrounding environment. Here, we present a study of electron attachment to metronidazole that aims to investigate possible reactions in the molecule upon anion formation. Another purpose is to elucidate the effect of microhydration on electron-induced reactions in metronidazole. We use two crossed electron/molecular beam devices with the

APA, Harvard, Vancouver, ISO, and other styles

34

Savastano, Matteo, Carlotta Cappanni, Carla Bazzicalupi, Cristiana Lofrumento, and Antonio Bianchi. "Anion Coordination into Ligand Clefts." Crystals 13, no. 5 (2023): 823. http://dx.doi.org/10.3390/cryst13050823.

Full text

Abstract:

A tripodal anion receptor has been obtained by an easy and fast single-reaction synthesis from commercial reagents. The three ligand arms-bearing aromatic groups able to form anion–π interactions define ligand clefts where large anions, such as perchlorate and perrhenate, are included. We report here the synthesis of the ligand, its acid/base properties in an aqueous solution which has been used to direct the synthesis of anion complexes, and the crystal structure of the free ligand and its anion complexes H3L(ClO4)2·H2O and H3L(ReO4)2.

APA, Harvard, Vancouver, ISO, and other styles

35

Desfi, Annisa, Muhammad Zaky, Nessa Zarlita, Velly Effendy, Irfan Ananda Ismail, and Munadia Insani. "Anion Recoqnition Reactios." Journal of Global Research Education 2, no. 1 (2024): 22–26. https://doi.org/10.62194/cadrtm68.

Full text

Abstract:

In the recognition of anions there are several anions that are tested so that we can recognize the anions. This praticum aims to be able to analyze various kinds of anions in a sample and write down the reaction. This praticum aims to be able to analyze various kinds of anions in a sample and write down the reaction. Analysis of this anion using the method of organoleptic methods Organoleptic properties are properties that can be measured by the senses, for example, taste, aroma, color, and so on There are several types of anions found in the samples tested. These finding implays indicate the

APA, Harvard, Vancouver, ISO, and other styles

36

Maeda, Hiromitsu, and Yohei Haketa. "Charge-by-charge assemblies based on planar anion receptors." Pure and Applied Chemistry 83, no. 1 (2010): 189–99. http://dx.doi.org/10.1351/pac-con-10-09-34.

Full text

Abstract:

This critical overview proposes a new concept, a charge-by-charge assembly, which consists of alternately stacked positively and negatively charged species, by introducing examples of planar anionic structures in the solid state. The preparation of planar organic anions is not easy; however, complexation of planar anion receptor molecules with inorganic anions is found to be an efficient strategy for constructing them. As suitable motifs, dipyrrolyldiketone boron complexes exhibit various receptor–anion complexes and charge-by-charge assemblies in the solid state. The concept discussed here ca

APA, Harvard, Vancouver, ISO, and other styles

37

Zhou, Benhua, and Hongxia Liu. "Tetrakis(4-chloroanilinium) hexachloridostannate(IV) dichloride." Acta Crystallographica Section E Structure Reports Online 68, no. 6 (2012): m782. http://dx.doi.org/10.1107/s1600536812021666.

Full text

Abstract:

The asymmetric unit of the title compound, (C6H7ClN)4[SnCl6]Cl2, comprises two 4-chloroanilinium cations, half of an [SnCl6]2− anion and a Cl− anion. The SnIV atom, located on a special position on a twofold rotation axis, exhibits an octahedral environment. In the crystal, molecules are linked by N—H...Cl hydrogen bonds between the 4-chloroanilinium cations, [SnCl6]2− anions and Cl− anions.

APA, Harvard, Vancouver, ISO, and other styles

38

Martínez-Aguirre, Mayte A., Diego Martínez Otero, Magali L. Álvarez-Hernández, Teresa Torres-Blancas, Alejandro Dorazco-González, and Anatoly K. Yatsimirsky. "Anion and sugar recognition by 2,6-pyridinedicarboxamide bis-boronic acid derivatives." Heterocyclic Communications 23, no. 3 (2017): 171–80. http://dx.doi.org/10.1515/hc-2017-0054.

Full text

Abstract:

AbstractTwo 2,6-pyridinedicarboxamide derivatives containing arylboronic acid fragments were prepared and fully characterized including X-ray crystal diffraction analysis of a pinacol ester. These compounds are potential bifunctional receptors for sugars and anions. Acid dissociation and stability constants for complexation of both receptors with glucose and fructose were determined by potentiometric titrations in aqueous DMSO. Also, binding of alizarin red S indicator was studied spectrophotometrically and a highly sensitive detection of fructose by an indicator displacement assay was propose

APA, Harvard, Vancouver, ISO, and other styles

39

Jian, Fang Fang, E. Liu, and Jun Ying Ma. "Interesting fluorine anion water clusters [F−·(H2O)n] in metal complex crystals." CrystEngComm 20, no. 27 (2018): 3849–57. http://dx.doi.org/10.1039/c8ce00532j.

Full text

Abstract:

Three crystalline complexes containing fluorine anion water cluster were reported. The fluoride anions and water molecules are H-bonded to each other in an alternating fashion within the fluoride–water hybrid cluster, where a fluoride anion plays the important role.

APA, Harvard, Vancouver, ISO, and other styles

40

Alekov, Alexi K., and Christoph Fahlke. "Channel-like slippage modes in the human anion/proton exchanger ClC-4." Journal of General Physiology 133, no. 5 (2009): 485–96. http://dx.doi.org/10.1085/jgp.200810155.

Full text

Abstract:

The ClC family encompasses two classes of proteins with distinct transport functions: anion channels and transporters. ClC-type transporters usually mediate secondary active anion–proton exchange. However, under certain conditions they assume slippage mode behavior in which proton and anion transport are uncoupled, resulting in passive anion fluxes without associated proton movements. Here, we use patch clamp and intracellular pH recordings on transfected mammalian cells to characterize exchanger and slippage modes of human ClC-4, a member of the ClC transporter branch. We found that the two t

APA, Harvard, Vancouver, ISO, and other styles

41

Akaike, N., N. Inomata, and T. Yakushiji. "Differential effects of extra- and intracellular anions on GABA-activated currents in bullfrog sensory neurons." Journal of Neurophysiology 62, no. 6 (1989): 1388–99. http://dx.doi.org/10.1152/jn.1989.62.6.1388.

Full text

Abstract:

1. Kinetic properties of gamma-aminobutyric acid (GABA)-gated inward and outward anion currents were investigated in the frog sensory neurons perfused internally and externally with various anions with the use of a rapid concentration-jump (termed as 'concentration-clamp') technique. 2. Extracellular Br- [( Br-]o) shifted the dose-response curves of GABA-induced inward anion currents to the left without affecting the maximum values, whereas [Cl-]o, [I-]o, [No3-]o, [HCOO-]o, and [CH3COO-]o altered the rate of desensitization differently without shifting the GABA dose-response curves, indicating

APA, Harvard, Vancouver, ISO, and other styles

42

VILLAR-GARCIA, IGNACIO J. "A Structural Investigation of Ionic Liquid Mixtures." Physical Chemistry Chemical Physics 18 (February 8, 2024): 8608–24. https://doi.org/10.5281/zenodo.10636595.

Full text

Abstract:

The structures of mixtures of ionic liquids (ILs) featuring a common 1-butyl-3-methylimidazolium ([C<sub>4</sub>C<sub>1</sub>im]<sup>+</sup>) cation but different anions have been investigated both experimentally and computationally. <sup>1</sup>H and <sup>13</sup>C NMR of the ILs and their mixtures has been performed both on the undiluted liquids and those diluted by CD<sub>2</sub>Cl<sub>2</sub>. These experiments have been complemented by quantum chemical density functional theory calculations and molecular dynamics simulations. These techniques have identified the formation of pre

APA, Harvard, Vancouver, ISO, and other styles

43

Modrušan, Matija, Lucija Glazer, Lucija Otmačić, et al. "Anion-Binding Properties of Short Linear Homopeptides." International Journal of Molecular Sciences 25, no. 10 (2024): 5235. http://dx.doi.org/10.3390/ijms25105235.

Full text

Abstract:

A comprehensive thermodynamic and structural study of the complexation affinities of tetra (L1), penta (L2), and hexaphenylalanine (L3) linear peptides towards several inorganic anions in acetonitrile (MeCN) and N,N-dimethylformamide (DMF) was carried out. The influence of the chain length on the complexation thermodynamics and structural changes upon anion binding are particularly addressed here. The complexation processes were characterized by means of spectrofluorimetric, 1H NMR, microcalorimetric, and circular dichroism spectroscopy titrations. The results indicate that all three peptides

APA, Harvard, Vancouver, ISO, and other styles

44

Flood, Amar H. "Creating molecular macrocycles for anion recognition." Beilstein Journal of Organic Chemistry 12 (March 31, 2016): 611–27. http://dx.doi.org/10.3762/bjoc.12.60.

Full text

Abstract:

The creation and functionality of new classes of macrocycles that are shape persistent and can bind anions is described. The genesis of triazolophane macrocycles emerges out of activity surrounding 1,2,3-triazoles made using click chemistry; and the same triazoles are responsible for anion capture. Mistakes made and lessons learnt in anion recognition provide deeper understanding that, together with theory, now provides for computer-aided receptor design. The lessons are acted upon in the creation of two new macrocycles. First, cyanostars are larger and like to capture large anions. Second is

APA, Harvard, Vancouver, ISO, and other styles

45

Fortenberry, R. C. "Theoretical Electronic and Rovibrational Studies for Anions of Interest to the DIBs." Proceedings of the International Astronomical Union 9, S297 (2013): 344–48. http://dx.doi.org/10.1017/s1743921313016098.

Full text

Abstract:

AbstractThe dipole-bound excited state of the methylene nitrile anion (CH2CN−) has been suggested as a candidate carrier for a diffuse interstellar band (DIB) at 803.8 nm. Its corresponding radical has been detected in the interstellar medium (ISM), making the existence for the anion possible. This work applies state-of-the-art ab initio methods such as coupled cluster theory to reproduce accurately the electronic excitations for CH2CN− and the similar methylene enolate anion, CH2CHO−. This same approach has been employed to indicate that 19 other anions may possess electronically excited stat

APA, Harvard, Vancouver, ISO, and other styles

46

Rudiuk, Vitalii V., Anna M. Shaposhnyk, Vyacheslav M. Baumer, Igor A. Levandovskiy, and Svitlana V. Shishkina. "Salts of 4-[(benzylamino)carbonyl]-1-methylpyridinium and iodide anions with different cation:iodine stoichiometric ratios." Acta Crystallographica Section E Crystallographic Communications 77, no. 12 (2021): 1219–23. http://dx.doi.org/10.1107/s2056989021011300.

Full text

Abstract:

The two iodide salts, 4-[(benzylamino)carbonyl]-1-methylpyridinium iodide–iodine (2/1), C14H15N2O+·I−·0.5I2, I, and 4-[(benzylamino)carbonyl]-1-methylpyridinium triiodide, C14H15N2O+·I3 −, II, with different cation:iodine atoms ratios were studied. Salt I contains one cation, one iodide anion and half of the neutral I2 molecule in the asymmetric unit (cation:iodine atoms ratio is 1:2). Salt II contains two cations, one triiodide anion (I 3 −) and two half triiodide anions (cation:iodine atoms ratio is 1:3). The NH group forms N—H...I hydrogen bonds with the I− anion in the crystal of I or N—H.

APA, Harvard, Vancouver, ISO, and other styles

47

Diop, Mouhamadou Birame, Libasse Diop, Laurent Plasseraud та Thierry Maris. "Crystal structure of 2-methyl-1H-imidazol-3-ium aquatrichlorido(oxalato-κ2O,O′)stannate(IV)". Acta Crystallographica Section E Crystallographic Communications 71, № 5 (2015): 520–22. http://dx.doi.org/10.1107/s2056989015005988.

Full text

Abstract:

The tin(IV) atom in the complex anion of the title salt, (C4H7N2)[Sn(C2O4)Cl3(H2O)], is in a distorted octahedral coordination environment defined by three chlorido ligands, an oxygen atom from a water molecule and two oxygen atoms from a chelating oxalate anion. The organic cation is linked through a bifurcated N—H...O hydrogen bond to the free oxygen atoms of the oxalate ligand of the complex [Sn(H2O)Cl3(C2O4)]−anion. Neighbouring stannate(IV) anions are linked through O—H...O hydrogen bonds involving the water molecule and the two non-coordinating oxalate oxygen atoms. In combination with a

APA, Harvard, Vancouver, ISO, and other styles

48

Zhang, Jian-Feng, Bo Wan, Wen Liu та Qian Shi. "Diaquadi-μ-formato-bis{μ-2,2′-[propane-1,3-diylbis(nitrilomethanylylidene)]diphenolato}cadmium(II)dinickel(II) dihydrate". Acta Crystallographica Section E Structure Reports Online 68, № 8 (2012): m1122—m1123. http://dx.doi.org/10.1107/s1600536812029583.

Full text

Abstract:

In the centrosymmetric title compound, [CdNi2(C17H16N2O2)2(HCOO)2(H2O)2]·2H2O, The NiIIcation is chelated by a 2,2′-[propane-1,3-diylbis(nitrilomethanylylidene)]diphenolate (salpn) anion, and further coordinated by a formate anion and a water molecule in a distorted NiN2O4octahedral geometry. The CdIIcation, located on an inversion center, is coordinated by four deprotonated hydroxy groups from two salpn anions and two carboxylate O atoms from formate anions in a distorted octahedral geometry. Both formate and salpn anions bridge the Cd and Ni cations, forming a trinuclear complex. Within the

APA, Harvard, Vancouver, ISO, and other styles

49

Abdul Kadir, Maisara, Nur Shuhaila Haryani Haris, Hafiza Mohamed Zuki, Syara Kassim, and Karimah Kassim. "Synthesis, Spectroscopic Evaluations and UV-Vis Titration Studies of New Symmetrical Amide Compounds Derived from N-6-[(4-pyridylmethylamino)carbonyl]-pyridine-2-carboxylic Acid Methyl Ester." Trends in Sciences 21, no. 5 (2024): 7405. http://dx.doi.org/10.48048/tis.2024.7405.

Full text

Abstract:

In this study, 2 flexible and pre-organized tetraamide compounds derived from N-6-[(4-pyridylmethylamino)carbonyl]-pyridine-2-carboxylic acid methyl ester namely 1,2-bis[N,N’-6-(4-pyridylmethylamido)pyridyl-2-carboxyamido]pentane (L1) and 1,2-bis[N,N’-6-(4-pyridylmethylamido)pyridyl-2-carboxyamido]hexane (L2) have been successfully synthesized when reacted with diamines in 1:2 ratio. These new compounds were built from combination of 3 main components, as a trend requires for anion receptor which are (i) 2,6-pyridine dicarboxamide moieties as targeted anion binding host, (ii) amino methyl pyri

APA, Harvard, Vancouver, ISO, and other styles

50

Kruszynski, Rafal, and Dariusz Wyrzykowski. "Tetrabutylammonium bromotrichloroferrate(III)." Acta Crystallographica Section E Structure Reports Online 62, no. 5 (2006): m994—m996. http://dx.doi.org/10.1107/s1600536806012402.

Full text

Abstract:

The Fe3+ centre in the complex anion of the title compound, [(C4H9)4N][FeBrCl3], is surrounded by three chloride anions and one bromide anion. The Br atom in [FeBrCl3]− is disordered, replacing Cl atoms. The Fe and N atoms lie on a twofold rotation axis.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!