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See searches and references containing HYDROGEN ANION!HYDROGEN ANION
Negative ion of hydrogen
The hydrogen anion, H−, is a negative ion of hydrogen, that is, a hydrogen atom that has captured an extra electron. The hydrogen anion is an important
Hydrogen_anion
Semipermeable membrane
and designed to conduct anions but reject gases such as oxygen or hydrogen. Anion exchange membranes are used in electrolytic cells and fuel cells to
Anion-exchange_membrane
Index of chemical compounds with the same name
a cation (left), whereas addition of an electron gives an anion (right). The hydrogen anion, with its loosely held two-electron cloud, has a larger radius
Hydrogen_ion
Ion with formula HF2 and charge 1-
The bifluoride ion is an inorganic anion with the chemical formula [HF2]−. The anion is colorless. Salts of bifluoride are commonly encountered in the
Bifluoride
Particle, atom or molecule with a net electrical charge
(that of hydrogen) contains no electrons, and thus consists of a single proton – much smaller than the parent hydrogen atom. The terms anion (−) and cation
Ion
Atom of the element hydrogen
gains a second electron, it becomes an anion. The hydrogen anion is written as "H–" and called hydride. The hydrogen atom has special significance in quantum
Hydrogen_atom
Splitting of water using a semipermeable membrane
Anion exchange membrane (AEM) electrolysis is the electrolysis of water that utilises a semipermeable membrane that conducts hydroxide ions (OH−) called
Anion exchange membrane electrolysis
Anion_exchange_membrane_electrolysis
Chemical compound
Fluoroantimonic acid is a mixture of hydrogen fluoride and antimony pentafluoride, containing various cations and anions, the simplest being fluoronium (H2F+)
Fluoroantimonic_acid
Molecule with a hydrogen bound to a more electropositive element or group
In chemistry, a hydride is formally the anion of hydrogen (H−), a hydrogen ion with two electrons. In modern usage, this is typically only used for ionic
Hydride
Type of molecule
dihydrogen cation, or atomic ions that only contain one atom such as the hydrogen anion (H−). "Heteronuclear molecule | Britannica". www.britannica.com. Retrieved
Heteronuclear_molecule
Ion containing two or more atoms
(H2SO4) is the polyatomic hydrogensulfate anion (HSO4−). The removal of another hydrogen ion produces the sulfate anion (SO42−). There are several patterns
Polyatomic_ion
Ion of fluorine
Fluoride (/ˈflʊəraɪd, ˈflɔːr-/) is an inorganic, monatomic anion of fluorine, with the chemical formula F− (also written [F]− ), whose salts are typically
Fluoride
Anion, salt, functional group or ester derived from a phosphoric acid
removal of two protons gives the hydrogen phosphate ion HPO42−. These names are also used in chemistry for salts of those anions, such as ammonium dihydrogen
Phosphate
Chemical compound
hydrogen cyanide in water, represented as HCN(aq), is called hydrocyanic acid. The salts of the cyanide anion are known as cyanides. Whether hydrogen
Hydrogen_cyanide
hydrogen bonds contributions. Because hydrogen bonds are weaker than normal coordinate bonds, the ligands in anion complexes present several hydrogen
Anion_complex
Anion of sulfur with 4 oxygen atoms
The sulfate or sulphate ion is a polyatomic anion with the empirical formula SO42−. Salts, acid derivatives, and peroxides of sulfate are widely used
Sulfate
Indian-American astrophysicist (1910–1995)
stochastic process, radiative transfer, the quantum theory of the hydrogen anion, hydrodynamic and hydromagnetic stability, turbulence, equilibrium and
Subrahmanyan_Chandrasekhar
Chemical compound
(April 2021). "Hydrogen peroxide formation in water during the VUV/UV irradiation process: Impacts and mechanisms of selected anions". Environmental
Hydrogen_peroxide
Weak acid with formula H3BO3
orthoboric acid, is a compound of boron, oxygen, and hydrogen with formula B(OH)3. It may also be called hydrogen orthoborate, trihydroxidoboron or boracic acid
Boric_acid
Any molecule with a cyano group (C≡N)
hypochlorite (ClO−), and hydrogen peroxide (H2O2). These oxidizers are used to destroy cyanides in effluents from gold mining. The cyanide anion reacts with transition
Cyanide
Poisonous and flammable gas
the hydrogen sulfide is first converted to an ammonium salt, whereas the natural gas is unaffected. RNH2 + H2S ⇌ [RNH3]+ + SH− The bisulfide anion is subsequently
Hydrogen_sulfide
Polyatomic anion
intermediate form in the deprotonation of carbonic acid. It is a polyatomic anion with the chemical formula HCO3–. Bicarbonate serves a crucial biochemical
Bicarbonate
Using hydrogen to decarbonize more sectors
hydrogen output of single alkaline (ALK) electrolyzer units is projected to increase to 5,000 Nm³/h, while Proton Exchange Membrane (PEM) and Anion Exchange
Hydrogen_economy
Chemical compound
to the formation of hydrogen-bonded ion pairs [H3O+·F−]. However concentrated solutions are strong acids, because bifluoride anions are predominant, instead
Hydrogen_fluoride
Salt formed from acetic acid and a base
The simplest of these is hydrogen acetate (called acetic acid) with corresponding salts, esters, and the polyatomic anion CH 3CO− 2, or CH 3COO− . Most
Acetate
Electricity-induced chemical reaction
electricity to convert liquid water (H2O) into gaseous hydrogen (H 2) and oxygen (O 2). The hydrogen produced by electrolysis can be used as fuel or as an
Electrolysis_of_water
Chemical compounds containing only hydrogen and one other chemical element
hydrides even when the hydrogen atom in it is not an anion. These hydrogen compounds can be grouped into several types. Binary hydrogen compounds in group
Binary_compounds_of_hydrogen
Chemical element with atomic number 1 (H)
among soluble molecules. In ionic compounds, hydrogen can take the form of either a negatively-charged anion, where it is known as hydride, or as a positively
Hydrogen
Subfield of astronomy
recombination – Key process in cooling primordial gas for star formation. Hydrogen anion – Negative ion affecting opacity in cool stellar atmospheres. Collision-induced
Outline_of_astrophysics
Intermolecular attraction between a hydrogen donor-and-acceptor pair
temperature dependence of hydrogen bonds and the dynamics of both the anions and the cations. The sudden weakening of hydrogen bonds during the solid-solid
Hydrogen_bond
Anion which interacts weakly with cations
non-coordinating anions has contributed to increased understanding of agostic complexes wherein hydrocarbons and hydrogen serve as ligands. Non-coordinating anions are
Non-coordinating_anion
Chemical group (RCOO); conjugate base of a carboxylic acid
(1993). "Tetrabutylammonium hydrogen bisbenzoate: Crystal structure and study of short hydrogen bonds in hydrogen bisbenzoate anion system". Journal of the
Carboxylate
Organic ion with a negatively charged carbon atom
In organic chemistry, a carbanion is an anion with a lone pair attached to a trivalent carbon atom. This gives the carbon atom a negative charge. Formally
Carbanion
Chemical group (–CH3) derived from methane
own in any of three forms: methanide anion (CH−3), methylium cation (CH+3) or methyl radical (CH• 3). The anion has eight valence electrons, the radical
Methyl_group
Ion
Hydrogenoxalate or hydrogen oxalate (IUPAC name: 2-Hydroxy-2-oxoacetate) is an anion with chemical formula HC2O−4 or HO−C(=O)−CO−2, derived from oxalic
Hydrogenoxalate
Ion, and compounds containing the ion
Sulfide (also sulphide in British English) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing one or more S2− ions
Sulfide
Chemical substance
Hydrogen iodide (HI) is a diatomic molecule and hydrogen halide. Aqueous solutions of HI are known as hydroiodic acid or hydriodic acid, a strong acid
Hydrogen_iodide
Hydrogen produced by renewable energy
Green hydrogen (GH2 or GH2) is hydrogen produced by the electrolysis of water using renewable electricity. Production of green hydrogen causes significantly
Green_hydrogen
Chemical compound
ISBN 9781498754293. Singh, S.; Eijt, S. W. H. (30 December 2008). "Hydrogen vacancies facilitate hydrogen transport kinetics in sodium hydride nanocrystallites".
Sodium_hydride
Monocationic atomic hydrogen, H+
On the other hand, calling the hydron simply hydrogen ion is not recommended because hydrogen anions also exist. The term "hydron" was defined by IUPAC
Hydron
German-American physicist (1906–2005)
Theorie der Beugung von Elektronen an Kristallen (Doctoral thesis). Hydrogen anion List of Jewish Nobel laureates 1634–1699: McCusker, J. J. (1997). How
Hans_Bethe
Chemical compound
(K+) and hydrogen phthalate anion (HP−) KHP → H 2 O {\displaystyle {\ce {->[{\ce {H2O}}]}}} K+ + HP− and then, acting as a weak acid, hydrogen phthalate
Potassium_hydrogen_phthalate
Chemical compound
The compound hydrogen chloride has the chemical formula HCl and as such is a hydrogen halide. At room temperature, it is a colorless gas, which forms white
Hydrogen_chloride
Transition metal thiolate complexes of hydrogen sulfide and hydrosulfide is the chemistry of coordination complexes of hydrogen sulfide and hydrosulfide (SH−)
Transition metal complexes of hydrogen sulfide and hydrosulfide
Transition_metal_complexes_of_hydrogen_sulfide_and_hydrosulfide
Chemical compound
colourless salt consists of the potassium cation (K+) and the bifluoride anion ([HF2]−). The salt is used as an etchant for glass. Sodium bifluoride is
Potassium_bifluoride
Chemical compound
Lithium hydride (LiH) is an inorganic compound composed of lithium and hydrogen. This alkali metal hydride is a colorless solid, although commercial samples
Lithium_hydride
Anion in which a Fe3+ ion is complexed by 6 CN– ions
Ferricyanide is the name of the anion [Fe(CN)6]3−. It is also called hexacyanoferrate(III) and in rare, but systematic nomenclature, hexacyanidoferrate(III)
Ferricyanide
Chemical compound
Bitartrate is an anion which is the conjugate base of tartaric acid. It may also refer to any salt or monoester of tartaric acid. Some examples of bitartrate
Bitartrate
Aqueous cation H3O+
and 2− 0 − 1+ 0 at 100.869 μm (2.9721 THz). Hydron (hydrogen cation) Hydride Hydrogen anion Hydrogen ion Grotthus mechanism Trifluorooxonium Law of dilution
Hydronium
Type of organocatalysis
anion-binding catalysis. Bifunctional urea and thiourea catalysis are abundant in the literature. Thioureas are often found to be stronger hydrogen-bond
Hydrogen-bond_catalysis
Chemical reaction
"Electrochemical hydrogen production through anion exchange membrane water electrolysis (AEMWE): Recent progress and associated challenges in hydrogen production"
Hydrogen_evolution_reaction
Chemical compound giving a proton or accepting an electron pair
used when the acid is made up of just hydrogen and one other element. For example, HCl has chloride as its anion, so the hydro- prefix is used, and the
Acid
use instead a polymer membrane that transports hydroxide anions. In an AAEMFC, the fuel, hydrogen or methanol, is supplied at the anode and oxygen through
Alkaline anion-exchange membrane fuel cell
Alkaline_anion-exchange_membrane_fuel_cell
made from ionomers and designed to conduct anions while being impermeable to gases such as oxygen or hydrogen. Alkaline fuel cell Alkaline fuel cell (AFC)
Glossary_of_fuel_cell_terms
Free radical species
equivalent to hydrogenation. For instance, the anthracene radical anion forms mainly (but not exclusively) 9,10-dihydroanthracene. Radical anions and their
Radical_anion
Device that converts the chemical energy from a fuel into electricity
electrochemical cell that converts the chemical energy of a fuel (often hydrogen) and an oxidizing agent (often oxygen) into electricity through a pair
Fuel_cell
Chemical compound
(HP(O)(OH)2), it contains the anion HPO32−. Its common name suggests that it contains an acidic hydrogen atom, as in sodium hydrogen carbonate. However, this
Disodium_hydrogen_phosphite
Exchange of ions between an electrolyte solution and a solid
and anions simultaneously. However, the simultaneous exchange of cations and anions is often performed in mixed beds, which contain a mixture of anion- and
Ion_exchange
Chemical compound (H–N=C=O)
be made by protonation of the cyanate anion, such as from salts like potassium cyanate, by either gaseous hydrogen chloride or acids such as oxalic acid
Isocyanic_acid
Chemical compound
is attached to a hydrogen atom. Its symmetry is classified by the molecular point group Ih. The existence of the dodecaborate(12) anion, [B12H12]2−, was
Dodecaborate
Aqueous solution of hydrogen chloride
also known as muriatic acid or spirits of salt, is an aqueous solution of hydrogen chloride (HCl). It is a colorless solution with a distinctive pungent smell
Hydrochloric_acid
Any chemical compound containing an O2 ion (charge –1)
superoxide ion, which has the chemical formula O−2. The systematic name of the anion is dioxide(1−). The reactive oxygen ion superoxide is particularly important
Superoxide
Any derivative of oxalic acid; chemical compound containing oxalate moiety
monovalent hydrogenoxalate anion HC2O4−. A salt with this anion is sometimes called an acid oxalate, monobasic oxalate, or hydrogen oxalate. The equilibrium
Oxalate
Negatively-charged molecule made of carbon and oxygen
In chemistry, an oxocarbon anion is a negative ion consisting solely of carbon and oxygen atoms, and therefore having the general formula C xOn− y for
Oxocarbon_anion
Physical and chemical properties of pure water
abundant molecule in the universe (behind molecular hydrogen and carbon monoxide). Water molecules form hydrogen bonds with each other and are strongly polar
Properties_of_water
Chemical compound
oxygen, making it an oxocarbon anion. Partial ionization yields the monovalent hydrogen acetylenedicarboxylate anion HC4O−4. The acid was first described
Acetylenedicarboxylic_acid
Technique in chemistry and manufacturing
oxidation of the anions (such as the evolution of bromine with bromides). However, with salts of some metals (such as sodium) hydrogen is evolved at the
Electrolysis
Broad-spectrum poisoning
long-term neurological problems. Toxic cyanide-containing compounds include hydrogen cyanide gas and cyanide salts, such as potassium cyanide. Poisoning is
Cyanide_poisoning
Chemical compound
BARF anion with the diethyl ether oxonium cation, [(Et2O)2H][BArF4]. It can be formed from the sodium salt in diethyl ether in the presence of hydrogen chloride
Tetrakis(3,5-bis(trifluoromethyl)phenyl)borate
Tetrakis(3,5-bis(trifluoromethyl)phenyl)borate
Chemical compound
species in cell biology. The molecule has a bent structure. The superoxide anion, • O− 2, and the hydroperoxyl radical exist in equilibrium in aqueous solution:
Hydroperoxyl
Chemical compound (OH–)
(occasionally hydroxyl ion) is a diatomic anion with chemical formula OH−. It consists of an oxygen and hydrogen atom held together by a single covalent
Hydroxide
Ion
Acid or hydrogen phosphites are called hydrogenphosphonates or acid phosphites. IUPAC recommends the name hydrogenphosphonates). They are anions HP(O)2OH−
Phosphite_(ion)
Anion of sulfur with 3 oxygen atoms
often lumped together with sulfur dioxide. The structure of the sulfite anion can be described with three equivalent resonance structures. In each resonance
Sulfite
Ion
Tetrachloroaluminate [AlCl4]− is an anion formed from aluminium trichloride and chloride. The anion has a tetrahedral shape and is isoelectronic with
Tetrachloroaluminate
Polyatomic ion (NO3, charge –1) found in explosives and fertilisers
nitrates in cured meats is associated with intestinal cancers. The nitrate anion is the conjugate base of nitric acid, consisting of one central nitrogen
Nitrate
chains, (SiO 3)2− n. Common containing metasilicate anion are: Inosilicates Metasilicic acid (hydrogen metasilicate) Sodium metasilicate Calcium metasilicate
Metasilicate
Class of chemical compounds
Mixed-anion compounds, heteroanionic materials or mixed-anion materials are chemical compounds containing cations and more than one kind of anion. The
Mixed-anion_compounds
Chemical compound
NaHCO3. It is a salt composed of a sodium cation (Na+) and a bicarbonate anion (HCO3−). Sodium bicarbonate is a white solid that is crystalline but often
Sodium_bicarbonate
Class of chemical species; phosphorus oxoacids and their deprotonated derivatives
protons (H+) from k hydroxyl groups –OH leaves anions generically called phosphates (if k = n − 2x + 2) or hydrogen phosphates (if k is between 1 and n − 2x
Phosphoric acids and phosphates
Phosphoric_acids_and_phosphates
Compounds containing hydrogen
denoted H−, and is used when hydrogen forms a compound with a more electropositive element. The existence of the hydride anion, suggested by Gilbert N. Lewis
Hydrogen_compounds
Chemical compound
An alkalide is a chemical compound in which alkali metal atoms are anions (negative ions) with a charge or oxidation state of −1. Until the first discovery
Alkalide
Solution in which the solvent is water
an ionic bond with the other anion. The cation bonded with the latter anion will dissociate and bond with the other anion. A common metathesis reaction
Aqueous_solution
Index of chemical compounds with the same name
generic name for any salt of sodium with an anion consisting of boron and oxygen, and possibly hydrogen, or any hydrate thereof. It can be seen as a
Sodium_borate
Hydrocarbon compound (CH4) in natural gas
compound that has the chemical formula CH4 (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent
Methane
Extremely strong acid
their strength to the extraordinary stability of the carboranate anion, a family of anions stabilized by three-dimensional aromaticity, as well as by electron-withdrawing
Superacid
Chemical compound
Potassium hydride, KH, is the inorganic compound of potassium and hydrogen. It is an alkali metal hydride. It is a white solid, although commercial samples
Potassium_hydride
Acid that contains oxygen
corresponding anions and salts. In the following table, the formula and the name of the anion refer to what remains of the acid when it loses all its hydrogen atoms
Oxyacid
Main anion present in sea water
The chloride /ˈklɔːraɪd/ ion (Cl−) is the anion of chlorine, that is, chlorine with an extra electron. The term "chloride" is also used non-systematically
Chloride
Macrocylcic molecule
cyano group and a stilbene. Cyanostar binds anions through hydrogen bonding from the C–H bonds, as the hydrogen has a positive electrostatic potential. It
Cyanostar
Chemical bonding involving attraction between ions
to covalence. In the simplest case, the cation is a metal atom and the anion is a nonmetal atom, but these ions can be more complex, e.g. polyatomic
Ionic_bonding
Chemical compound
Sodium bisulfate, also known as sodium hydrogen sulfate, is the sodium salt of the bisulfate anion, with the molecular formula NaHSO4. Sodium bisulfate
Sodium_bisulfate
Anion with the chemical formula PF6–
Hexafluorophosphate is an anion with chemical formula of [PF6]−. It is an octahedral species that imparts no color to its salts. [PF6]− is isoelectronic
Hexafluorophosphate
Inorganic anion containing one sulfur and one hydrogen atoms
inorganic anion with the chemical formula HS− (also written as SH−). It contributes no color to bisulfide salts. It often coexists with hydrogen sulfide
Bisulfide
Any chemical compound having a borohydride anion
Borohydride or tetrahydroborate refers to the anion [BH4]− and its salts. Borohydride or hydroborate is also the term used for compounds containing [BH4−nXn]−
Borohydride
Transfer of a proton between identical molecules
Hydrogen transfer in protic solvents describes the tendency for Hydrogen ions to migrate, often spontaneously, creating acids and bases from substances
Hydrogen transfer in protic solvents
Hydrogen_transfer_in_protic_solvents
Organic compound containing a –C(=O)OH group
and fatty acids. Deprotonation of a carboxylic acid gives a carboxylate anion. Carboxylic acids are often considered weak acids as they only partially
Carboxylic_acid
Chemical group (R–C=O)
It contains a double-bonded oxygen atom and an organyl group (R−C=O) or hydrogen in the case of formyl group (H−C=O). In organic chemistry, the acyl group
Acyl_group
Sulfur dianion
oxygen atom. In this anion, sulfur has an oxidation state of +6. Disulfate is the conjugate base of the hydrogen disulfate (hydrogen pyrosulfate) ion HS2O7−
Pyrosulfate
Chemical compound
ammonium cation ([NH4]+), and a bifluoride (or hydrogen difluoride) anion ([HF2]−). The triatomic bifluoride anion features a strong three-center four-electron
Ammonium_bifluoride
Chemical compound
dissolves in water, and itself partially dissociates, forming a hypochlorite anion, ClO−. HClO and ClO− are oxidizers, and the primary disinfection agents
Hypochlorous_acid
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