Stable anions. Medical search. Frequent questions

Apart from the valence anion, the uracil·(H 2 O) 3 complex can form a stable dipole - bound anion, but as the present calculations indicate the electron affinity, which corresponds to this attachment, is very small (13 meV). (arizona.edu)
The structure of the dipole-bound anion is virtually identical with the structure of the neutral complex. (arizona.edu)
Any molecule with a dipole moment above approximately 2.5 Debye can form a stable negative ion (dipole-bound anion). (tennessee.edu)

Versatile synthetic route has been developed to novel ligands possessing both cation and anion binding sites. (europa.eu)
This thesis presents various approaches for improving energy density of LIBs, NIBs and ASSBs with respect to harnessing the cation and anion redox. (uwaterloo.ca)

The FHA cycle is active inside the cell, detoxifying superoxide anion radicals (O2·-), which are mainly generated as a result of so-called 'electron leakage' to triplet oxygen (O2) in photosynthetic, mitochondrial, peroxisomal, and probably other electron transport chains (Ozyigit et al. (deepdyve.com)

After the first synthesis of the NHC boryl anion, Segawa continued to synthesize other NHC boryl anions by switching the backbones of the complexes. (wikipedia.org)
Crowning Li + ions by forming more stable and less diffusive crown ether-Li + complexes retards the generation of hygroscopic lithium oxides and mitigates Li + ion migration. (researchsquare.com)
1. Design, Synthesis and Supramolecular Integration of Spin Crossover Complexes with Stable Radical Ions: Towards Redox-, Color- and Magneto-SwitchabIe Materials. (jnu.ac.in)
The formation of the receptor-anion complexes has been supported by UV-vis titration studies and confirmed through binding constant calculations. (beilstein-journals.org)
It is shown that with uncharged L -ligands the four -coordinate complexes are about 20, 17 and 40 kJ/mole more stable than the corresponding three-, five- and six-coordinate complexes, respectively. (lu.se)
If the L -ligand is negatively charged only the four -coordinate complexes are stable. (lu.se)

Functionality of MNPs with ionic liquids greatly influenced the solubility of the MNPs with organic solvents depending on the alkyl chain length and the anions of the ionic liquids. (hindawi.com)
Ionic liquids, which can be tuned by choosing of the cations and anions independently, exhibited unique physicochemical properties, such as tunable miscibility with water and organic solvents, and have potential applications as electrolyte materials, green solvents, catalysts, and separation mediums [ 9 - 14 ]. (hindawi.com)
In this work, a novel kind of modified MNPs with N,N′-dialkylimidazolium-based ionic liquids containing different alkyl chain lengths and inorganic anions were synthesized by covalent bonding. (hindawi.com)
The resulting ionic liquids form stable thin layers (supported ionic liquid phases) on the porous silicon dioxide surface of the nanoparticles. (chemistryviews.org)

In 2020, however, a very interesting reaction between the NHC boryl anion and Be was reported. (wikipedia.org)

Dive into the research topics of 'A Novel Anion Doping for Stable CsPbI2Br Perovskite Solar Cells with an Efficiency of 15.56% and an Open Circuit Voltage of 1.30 V'. Together they form a unique fingerprint. (edu.sa)
Side chain engineering and film uniformity: two key parameters for the rational design of dopant-free polymeric hole-transport materials for efficient and stable perovskite solar cells. (ac.ru)

The grids were shown to be stable under conditions close to physiological (aqueous buffer, pH 7.4). (europa.eu)
It is envisioned that the uncoated but extremely water -stable and highly fluorescent W-PNCs have promising applications in chemical sensing, biosensing, and bioimaging of targets in aqueous medium. (bvsalud.org)
Mechanically reinforced fluorinated anion exchange membranes would demonstrate increased mechanical stability and lower solvent mediated crossover compared to non-reinforced counterparts for non-aqueous redox flow battery applications. (fuelcellstore.com)
These quaternary amine strong anion-exchange columns are highly stable for aqueous and low pH mobile phases. (fishersci.com)
They are typically insoluble in aqueous solutions (water) and extremely stable, making them useful in ceramic structur What is tin oxide powder?ATO nano-superfine powder of nano-stno2 antimony powder prepared by high-frequency plasma gas phase combustion method has high purity and low loose density (40% lower than that of similar domestic products). (mis-asia.com)

Increasing research interest on the selective and sensitive detection of anions has enriched the field of anion receptor chemistry with a wide array of design strategies [15-19] . (beilstein-journals.org)
Process-structure-property relationships were used to guide our development of these new membrane materials as highly selective anion-exchange membranes. (sbir.gov)

A chest radiograph revealed left upper lobe consolidation ( Figure 1 , panel A). Blood chemical analysis revealed diabetic ketoacidosis (25.4 mmol/L glucose, 3.2 mmol/L K+, 6.0 mmol/L HCO 3 −, anion gap 27 mg/dL, and pH 7.0 venous blood gas). (cdc.gov)
He underwent fluid resuscitation and investigations showed the following results: serum sodium 128 mmol/L, chloride 76 mmol/L, potassium 3.3 mmol/L, bicarbonate 28 mmol/L, anion gap 15.6 mmol/L, urea 35 mg/dL, creatinine 1.3 mg/dL, calcium 10.5 mg/dL, phosphorus 7.6mg/dL and magnesium 2.3 mg/dL. (who.int)

One of the major achievements of the group has been to stabilize various types of organic radicals, e.g., radical anions, radical cations and zwitterionic radicals through intramolecular non-covalent interactions. (jnu.ac.in)
The isolated organic radicals have been found to be ambient stable and, in some cases, even stable to chromatography. (jnu.ac.in)
The development of new organic receptors for the detection of anions is of key interest to supramolecular chemists owing to the biological and environmental importance of anions [1-7] . (beilstein-journals.org)
Volume-regulated anion channels (VRACs) mediate volume regulatory Cl - and organic solute efflux from vertebrate cells. (elifesciences.org)
Unlike homomeric LRRC8A and LRRC8D channels, heptameric LRRC8C-LRRC8A(IL1 25 ) channels have a large-diameter pore similar to that estimated for native VRACs, exhibit normal DCPIB pharmacology, and have higher permeability to large organic anions. (elifesciences.org)
Each of my four main areas of work is concerned with the formation and further reactions of organic fluorinated anions. (dur.ac.uk)
This study has yielded a series of stable fluorinated organic caesium salts which could be crystallised. (dur.ac.uk)

Either one or several atoms and molecules may form an anion. (worldatlas.com)
However, when it is formed by two or more atoms or molecules, then it is a polyatomic anion. (worldatlas.com)
The terms perchlorate or perchlorate anion refer to a negatively charged group of atoms consisting of a central chlorine atom bonded to four oxygen atoms. (cdc.gov)
These anions are best produced by "resonance" charge exchange from atoms in high Rydberg states (Rydberg electron transfer, RET). (tennessee.edu)
GdN 1− y X y systems doped by O, C, F, P, and S atoms are more stable than those doped by B and As atoms because of relatively high binding energies. (rsc.org)

However, the local structural distortion and reactive oxygen release accompanied by anion redox have hindered the harnessing of oxygen redox for commercialized LIBs. (uwaterloo.ca)
Therefore, developing solid electrolyte which can provide high ionic conductivity together with wide electrochemical stability window and chemical stability to the positive electrodes is necessary to fully utilize cation redox, and possibly anion redox together, of the high voltage positive electrode materials in ASSBs. (uwaterloo.ca)

Unfortunately however, no evidence of anion binding could be obtained for the resulting structures due to both stability problems (sequestering of cations by added anions) and intramolecular hydrogen bonding competing with anion binding. (europa.eu)

For this synthesis, an extra boron atom was added to the NHC boryl anion, and then was reduced, forcing dimerization between the molecules and allowing for a H-bridged tetraborane species to occur. (wikipedia.org)
Dipole-bound anions for 32 molecules with dipole moments between 2.5 and 6.0 Debye have been studied. (tennessee.edu)
In water solutions, this substance is present as a monovalent anion, ascorbate- (Asc-), which easily donates electrons to oxidized molecules and scavenges reactive oxygen species (ROS). (deepdyve.com)

Anion Exchanges of Water-Stable Perovskite Nanocrystals in the Pure Water Phase and Applications in Detecting Halide Ions via a Smartphone-Based Sensing Platform. (bvsalud.org)
For them to become stable, they either gain or lose one or more valence electrons and become ions. (worldatlas.com)
The ions with a net positive charge are called cations whereas those with net negative charge are anions. (worldatlas.com)
Another difference between the two ions is that anions have more electrons than protons while the cations have more protons than electrons. (worldatlas.com)
The samples were analyzed for nitrate and nitrite ions using ion chromatography (IC) and GC-mass spectrometry (GC-MS). The results indicate a higher stable isotopic ratio of delta 15N/14N in the aerosols collected at the cloud top of one cloud than the aerosols collected from the cloud base of a second cloud at the same altitude (30.48 m) on 18 July 2009. (academicjournals.org)
The anion binding process follows a first order rate equation and the calculated rate constants reveal a higher order of reactivity for AcO − ions. (beilstein-journals.org)
The nanoporous polymer will consist of both chemically stable and ionically conductive domains that self-assembles into complex nanostructures with interconnected ionic channels, allowing hydroxide ions to travel across the membrane. (sbir.gov)

Polymeric anion exchange packing for isocratic or gradient separation of carbohydrates. (thomassci.com)

during electrolysis, anions move to the positive electrode which is referred to as the anode, and cations migrate to the negative electrode called cathode. (worldatlas.com)

These characteristics make NHC boryl anions key ligands in many applications, such as polycyclic aromatic hydrocarbons, and more commonly low oxidation state main group element bonding. (wikipedia.org)

Herein, I− is partially replaced with the acetate anion (Ac−) in the CsPbI2Br framework, producing multiple benefits. (edu.sa)
The leading role of anions such as fluoride, acetate and phosphate at the physiological level in promoting tooth and bone health, metabolism and genetic transduction has been well established [8-14] . (beilstein-journals.org)

An AEM must have a high ionic conductivity, low gas/fuel crossover, and be chemically and mechanically stable over the lifetime of the fuel cell. (confex.com)

Specifically, there is a need for an anion exchange membrane (AEM) with excellent chemical stability in a strongly alkaline environment, good photo-stability, good hydroxide conductivity, and one that is mechanically robust to limit hydrogen and oxygen crossover. (sbir.gov)

The stable CsPbI2−x Br(Ac)x PSCs with high Voc and PCE are desirable for tandem solar cell applications. (edu.sa)

EPR spectroscopy measurements demonstrate that salinity (NaCl) triggers the accumulation of root apoplastic ascorbyl radicals in an A9C-dependent manner, confirming that l-ascorbate leaks through anion channels under depolarization. (deepdyve.com)

The present results suggest that in anti-perovskites and derivative structures, a high cation vacancy concentration combined with the presence of disordered molecular anions can lead to high cation mobility. (nist.gov)

Anion exchange membranes facilitate ion transport in polymer electrolyte membrane fuel cells. (confex.com)

At the same altitude, the stable nitrogen isotope ratio in the nitrogenous substances found in the aerosol depended on the aerosol position within the clouds. (academicjournals.org)
iii) thermodynamic modeling, and (iv) stable C-O-H-N isotope analysis. (carnegiescience.edu)
For assessing the folate content in a range of Brazilian PANCs, we extended the validation of an existing stable isotope dilution assay (SIDA) for the stably 13 C-labelled 10-formyl-Pte[ 13 C 5 ]Glu (10-CHO-Pte[ 13 C 5 ]Glu). (frontiersin.org)

As the experimental evidence and theoretical calculations have indicated, the isolated uracil molecule can only attach an excess electron into a diffuse dipole-bound state, while some recent experiments suggest that the uracil· water complex can form a more stable valence-type anion. (arizona.edu)
We have investigated the electronic structure and magnetism of anion doped GdN 1− y X y (X = B, C, O, F, P, S and As) systems by first-principles calculations based on density functional theory. (rsc.org)

4 . The terms perchlorates or perchlorate salts refer to the inorganic compounds that contain the perchlorate anion bonded to a positively charged group such as ammonium or an alkali or alkaline earth metal. (cdc.gov)

Iron oxide (II,III) Fe3O4 This iron is highly insoluble and stable and can be used to make glass and other optical or ceramic materials. (robocup2009.org)
They are usually insoluble (water) and extremely stable. (robocup2009.org)

Fumasep FAPQ-330 is a fluorinated anion-exchange membrane - non-reinforced with low resistance, high oxidative stability, resistant to chlorine and high stability in acidic environment. (fuelcellstore.com)
Electrochemical processes requiring anion exchange membranes with high oxidative stability and highly resistant to chlorine. (fuelcellstore.com)
Identifying a relationship between the mechanical and hygral stretching to predict durability in a working device is critical to the development of durable anion exchange membranes. (confex.com)

This compound is extremely stable even at room temperature, and more studies are being completed to further understand the mechanism of this reaction. (wikipedia.org)

The salt effect cannot be described in terms of Debye screening, but involves the ion-specific sequestering of anions within the narrow channel. (lu.se)

In this work we investigate the ability of the uracil·water complex to form stable anionic systems. (arizona.edu)

In the branched cases some monomers are missing the ammonium anion and instead link to three other monomers. (wikipedia.org)
US 4721519 , Thomas, William P. & Lawton, William S., "Stable ammonium polyphosphate liquid fertilizer from merchant grade phosphoric acid", published 1988-01-26, assigned to American Petro Mart Inc. (wikipedia.org)

NHC boryl anions have stronger electron-releasing character when compared to normal NHCs. (wikipedia.org)
Synthesis of a Highly Electron-Deficient, Water-Stable, Large Ionic Box: Multielectron Accumulation and Proton Conductivity. (jnu.ac.in)
The excess electron in such an anion is very diffuse and weakly bound. (tennessee.edu)

They are non-flammable, and are "tunable" solvents, as the cations can be substituted and/or paired with different anions to manipulate the properties of the liquids and tailor them for specific applications. (cdc.gov)

They are compounds containing at least one oxygen anion and one metallic cation. (mis-asia.com)

Desk 1 The SLC26 Multifunctional Anion Exchanger /Anion Route gene Family includes a one SulP polypeptide, YchM. (exposed-skin-care.net)
d) The reaction of bifunctional carbon acids with fluorinated dienes has been used to develop a route to new pentadienyl anions, cyclopentadienes, and cyclopentadienyl anions. (dur.ac.uk)

A team that included KAIST scientists has used anion engineering to develop a separator substance that keeps neighbouring perovskite sheets apart, limiting migration. (nature.com)
The stable phase is highly defective, having 1/3 of the Li sites vacant, while the presence of the OH − anion introduces the possibility of rotational disorder that may be coupled to cation migration. (nist.gov)

Some are air and water stable and immiscible with water. (cdc.gov)

An N-heterocyclic carbene boryl anion is an isoelectronic structure of an N-heterocyclic carbene (NHC), where the carbene carbon is replaced with a boron atom that has a -1 charge. (wikipedia.org)
NHC boryl anions have a planar geometry, and the boron atom is considered to be sp2-hybridized. (wikipedia.org)
This reaction made a boryllithium complex, where the boron atom shows strong structural similarity to a free boryl anion. (wikipedia.org)
In this case, the boryl anion was reacted with a Be complex, and rather than forming a bond to, and receiving σ-donation from the boron atom, it reacted with one of the carbons in the backbone of the anion. (wikipedia.org)
If the anion is formed by one atom, it is called a monoatomic anion. (worldatlas.com)

Perchlorates are stable at normal temperatures, but when they are heated to a high temperature, they begin to react. (cdc.gov)
X-ray and neutron experiments conducted over the temperature range 20 °C - 200 °C, including diffraction, quasi-elastic neutron scattering (QENS), maximum entropy method (MEM) analysis, as well as ab initio molecular dynamics (AIMD) simulations together show conclusively that the high lithium ion conductivity of cubic Li 2 OHCl is correlated to "paddlewheel" rotation of the dynamic OH− anion. (nist.gov)

The phylogenetically ancient SLC26 gene family encodes multifunctional anion exchangers and anion channels transporting a wide selection of substrates, including Cl? (exposed-skin-care.net)
This paper is valuable to the field of ion channels, as it provides useful information about the assembly of the volume-regulated anions channels formed by LRRC8 proteins. (elifesciences.org)
Intriguingly, the replacement of gluconate with ascorbate in the patch-clamp pipette reveals a large ascorbate efflux current, which shows sensitivity to the anion channel blocker, anthracene-9-carboxylic acid (A9C), indicative of the ascorbate release via anion channels. (deepdyve.com)

It is the least abundant of the stable halogens , being the sixty-first most abundant element. (wikipedia.org)
On the other hand, the halogens and many other non-metals form anions. (worldatlas.com)

It is easy to disperse into a stable nano-slurry, which greatly reduces the difficulty of dispersion of nano-ATO powder and improves the dispersion efficiency. (mis-asia.com)
The magnetic relaxation dispersion method sensitively detects stable oligomers without being affected by other interactions. (lu.se)

The major interest in the first project was in the exploration of the potential of anion binding as a driving force for self-assembly of specific structures. (europa.eu)

incorporation into acid-stable materials, in keeping with YchM work as a Na+-reliant HCO3? (exposed-skin-care.net)

The first difference is that anions possess negative electrical charges while the cations have positive electrical charges. (worldatlas.com)
The part with the negative charge is called the perchlorate anion or just perchlorate. (cdc.gov)

Hence the anions and cations are responsible for the phenomenon of the flow of electric current in a dry cell. (worldatlas.com)

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