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Ring molecules with several ether (–O–) groups
chemistry, crown ethers are cyclic chemical compounds that consist of a ring containing several ether groups (R−O−R'). The most common crown ethers are cyclic
Crown_ether
Organic compounds made of alkyl/aryl groups bound to oxygen (R–O–R')
In organic chemistry, ethers are a class of compounds that contain an ether group, a single oxygen atom bonded to two separate carbon atoms, each part
Ether
Ring molecule with several amine (–N– or >N–) groups
In organic chemistry, an aza-crown ether is an aza analogue of a crown ether (cyclic polyether). That is, it has a nitrogen atom (amine linkage, −NH−
Aza-crown_ether
Chemical compound
12-Crown-4, also called 1,4,7,10-tetraoxacyclododecane and lithium ionophore V, is a crown ether with the formula C8H16O4. It is a cyclic tetramer of
12-Crown-4
Chemical compound
hygroscopic crystalline solid with a low melting point. Like other crown ethers, 18-crown-6 functions as a ligand for some metal cations with a particular
18-Crown-6
Ring molecules with several sulfide (–S–) groups
In organic chemistry, thia-crown ethers are organosulfur compounds which are the thia analogues of crown ethers (cyclic polyethers). That is, they have
Thia-crown_ether
Chemical compound
15-Crown-5 is a crown ether with the formula (C2H4O)5. It is a cyclic pentamer of ethylene oxide. It forms a complex with various cations, including sodium
15-Crown-5
Supramolecular structures held together other than by covalent bonds
There are several typical host molecules, such as cyclodextrin and crown ether. Host molecules usually have a pore-like structure that is able to capture
Host–guest_chemistry
American organic chemist (1904–1989)
26, 1989) was an American organic chemist best known for discovering crown ethers and describing methods of synthesizing them during his entire 42-year
Charles_J._Pedersen
Nigerian artist (born 1977)
Galembo, Laylah Amatullah Barrayn, Alex Webb and Rebecca Norris Webb. Crown Ether was a 50-foot-tall sculpture at the 2017 Coachella Valley Music and Art
Olalekan_Jeyifous
Molecule with ability to reversibly switch states
Shiga M, Takagi M, Ueno K (1980). "Azo-Crown Ethers. The Dyes with Azo Group Directly Involved in the Crown Ether Skeleton". Chemistry Letters. 9 (8): 1021–1022
Molecular_switch
Chemical compound
9-Crown-3, also called 1,4,7-trioxonane or 1,4,7-trioxacyclononane, is a crown ether with the formula (C2H4O)3. A colorless liquid, it is obtained in low
9-Crown-3
Chemical compound
crown ethers, it facilitates the dissolution of many salts in organic solvents. It is related to the non-benzannulated 18-crown-6. Dibenzo-18-crown-6
Dibenzo-18-crown-6
Arsenic sulfide mineral
sulfide CH3SCH3 Methionine Heterocycles C2H4S C4H4S Thiamine Biotin Thia-crown ether Sulfonium S-Adenosyl methionine S-Methylmethionine Dimethylsulfoniopropionate
Realgar
Chemical separation technique
analyte, ionic interactions and π-π interactions. Chiral crown stationary phases consist Crown ethers, immobilized or bonded to the support particles, are
Chiral_column_chromatography
Chemical compounds with the structure R–O–O–R'
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Peroxide
Molecule composed of two or more intertwined rings
bis-bipyridinium salts which form strong complexes threaded through crown ether bis(para-phenylene)-34-crown-10. Template directed syntheses are mostly performed under
Catenane
Chemical compound
organic compound, classified as an ether. It is a colorless liquid with a faint sweet odor similar to that of diethyl ether. The compound is often called simply
1,4-Dioxane
Chemical group (–CH3) derived from methane
Péligot (1835) "Mémoire sur l'espirit de bois et sur les divers composés ethérés qui en proviennent" (Memoir on spirit of wood and on the various ethereal
Methyl_group
Functional group (C=O)
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Carbonyl_group
Cyclic chemical group (–C6H5)
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Phenyl_group
Iron (II) disulfide mineral
sulfide CH3SCH3 Methionine Heterocycles C2H4S C4H4S Thiamine Biotin Thia-crown ether Sulfonium S-Adenosyl methionine S-Methylmethionine Dimethylsulfoniopropionate
Pyrite
isolated as complexes with polyether ligands, such as crown ethers and [2.2.2]cryptand. Crown ethers and cryptands are typically known for their ability
Germanium(II) dicationic complexes
Germanium(II)_dicationic_complexes
all heteroatoms) and three or more donor sites that serve as ligands. Crown ethers and porphyrins are prominent examples. Macrocyclic ligands often exhibit
Macrocyclic_ligand
Chemical group (–OCH3)
The simplest of methoxy compounds are methanol and dimethyl ether. Other methoxy ethers include anisole and vanillin. Many metal alkoxides contain methoxy
Methoxy_group
Chemical group (–CH2–CH3)
äldre C4H10, ethyl, den nyare C2H6, methyl, … " (One may then give names to ether radicals; one can call the older [one] C4H10, ethyl, the newer [one] C2H6
Ethyl_group
Organic compound with an –S– group
compounds, volatile sulfides have foul odors. A sulfide is similar to an ether except that it contains a sulfur atom in place of the oxygen. The grouping
Organic_sulfide
Field of chemistry
on crown ether and cryptand. In 1976, less than ten years after the discovery of crown ether, Cram et al. developed a functionalized binapthyl crown ether
Supramolecular_catalysis
Scientific publications term
polysaccharides, cyclodextrins, glycopeptide antibiotics, proteins, Pirkle, crown ethers, etc. to achieve analysis of chiral molecules. This term has become very
Chiral_analysis
Chemical compound
Dimethyl sulfate is produced commercially by the reaction of dimethyl ether with sulfur trioxide: CH3OCH3 + SO3 → (CH3)2SO4 Sulfate esters are used
Sulfur_trioxide
Chemical group (–OH)
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Hydroxy_group
Chemical compound
with crown ethers are known. Reaction with dibenzo-18-crown-6 gives solid Eu(II) perchlorate crown-ether complexes. Related Eu(II) crown-ether chemistry
Europium(II)_perchlorate
Chemical compound
2-Bromoethyl ether (or Bis(2-bromoethyl) ether) is an organobromine compound that is also an ether. It is used in the manufacture of pharmaceuticals and crown ethers
2-Bromoethyl_ether
Chemical group derived from alkanes (one hydrogen removed)
where alkyl = methyl, ethyl, etc. A dialkyl ether is an ether with two alkyl groups, e.g., diethyl ether O(CH2CH3)2. In medicinal chemistry, the incorporation
Alkyl_group
Chemical element with atomic number 11 (Na)
only 0.35 g/L of sodium chloride will dissolve in ethanol. A crown ether such as 15-crown-5 may be used as a phase-transfer catalyst. Sodium content of
Sodium
Chemical compound
ISBN 978-0-12-352651-9. Ray Q. Brewster, Theodore Groening (1934). "P-Nitrophenyl Ether". Organic Syntheses. 14: 66. doi:10.15227/orgsyn.014.0066. Zumdahl, Steven;
Copper(II)_sulfate
Poisonous and flammable gas
sulfide CH3SCH3 Methionine Heterocycles C2H4S C4H4S Thiamine Biotin Thia-crown ether Sulfonium S-Adenosyl methionine S-Methylmethionine Dimethylsulfoniopropionate
Hydrogen_sulfide
Branch of chemistry
of molecules similar to crown ethers, called cryptands. After that, Donald J. Cram synthesized many variations to crown ethers, on top of separate molecules
Supramolecular_chemistry
Corrosive liquid of excess sulfur trioxide in solution
sulfide CH3SCH3 Methionine Heterocycles C2H4S C4H4S Thiamine Biotin Thia-crown ether Sulfonium S-Adenosyl methionine S-Methylmethionine Dimethylsulfoniopropionate
Oleum
Class of organic compounds
compounds of type R1R2C(OR)(NR'2) (R,R' ≠ H) also known as a hemiaminal ether or aminal, a.k.a. aminoacetal. S,S-acetal refers to compounds of type R1R2C(SR)(SR')
Acetal
Chemical compound of sulfur and oxygen
sulfide CH3SCH3 Methionine Heterocycles C2H4S C4H4S Thiamine Biotin Thia-crown ether Sulfonium S-Adenosyl methionine S-Methylmethionine Dimethylsulfoniopropionate
Sulfur_dioxide
Chemical compounds with a sulfur atom
thiols with base gives thiolate ions. Thioethers are the sulfur analogs of ethers. Sulfonium ions have three groups attached to a cationic sulfur center.
Sulfur_compounds
Cyclic, multidentate ligands adept at encapsulating cations
for their efforts in discovering and determining uses of cryptands and crown ethers, thus launching the now flourishing field of supramolecular chemistry
Cryptand
Chemical group, –C(=O)CH3
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Acetyl_group
Topics referred to by the same term
portion of a tree Crown ether, a cyclic chemical compound that consists of a ring containing several ether groups Crown gear or crown Crown group, the most
Crown_(disambiguation)
Chemical compound
RC(O)CHClR' + HCl + SO2 It also chlorinates alkanes, alkenes, alkynes, aromatics, ethers (such as tetrahydrofuran) and epoxides. Such reactions occur under free
Sulfuryl_chloride
Chemical compound (H2SO4)
manufacture of narcotic drugs or psychotropic substances. Aqua regia Diethyl ether—also known as "sweet oil of vitriol" Piranha solution Sulfur oxoacid Sulfuric
Sulfuric_acid
Organic compounds of the form >C=N–OH
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Oxime
Organic compounds with a carbon-carbon-oxygen ring
In organic chemistry, an epoxide is a cyclic ether, where the ether forms a three-atom ring: two atoms of carbon and one atom of oxygen. This triangular
Epoxide
Chemical group (–CH2–C6H5)
benzylated in presence of phenol functional groups using Cu(acac)2 Benzyl ethers can be removed under reductive conditions, oxidative conditions, and the
Benzyl_group
Chemical compound
hexadentate ligand in coordination chemistry. It is the parent hexaaza-crown ether. Its protonated derivatives bind anions via multiple hydrogen bonds.
Hexaaza-18-crown-6
Organic compound
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Urea
Chemical compound
1021/ac60005a007. Marks, E.M.; Lipkin, D. (1939). "Reaction of Aliphatic Ethers with Denigés' Reagent". J. Org. Chem. 3 (6): 598–602. doi:10.1021/jo01223a008
Mercury(II)_sulfate
Chemical group (–C4H9) derived from butane
chromate. Otherwise alpha-H's are abstracted by Cr(VI). A tert-butyl (tBu) ether is an acid-labile protecting group for alcohols. A traditional way to introduce
Butyl_group
Organic compound containing an –NO2 group
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Nitro_compound
Molecule that performs a logical operation
gate using an aza-crown ether receptor and sodium and potassium ions as the inputs. Either of the two ions could bind to the crown ether, causing the PET
Molecular_logic_gate
Molecular-scale artificial or biological device
different applications. A major example is the design of a photoresponsive crown ether containing an azobenzene unit, which could switch between cis and trans
Molecular_machine
Inorganic compound (SOCl2)
sulfide CH3SCH3 Methionine Heterocycles C2H4S C4H4S Thiamine Biotin Thia-crown ether Sulfonium S-Adenosyl methionine S-Methylmethionine Dimethylsulfoniopropionate
Thionyl_chloride
Constants that describe stability of coordination complexes
metal ion is inserted when a complex is formed. For example, the crown ether 18-crown-6 forms much stronger complexes with the potassium ion, K+ than with
Stability constants of complexes
Stability_constants_of_complexes
Chemical group (–C(=O)C6H5
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Benzoyl_group
Chemical compound
compound with the formula (NHCH2CH2NHCH2CH2CH2)2. Classified as an aza-crown ether, it is a white solid that is soluble in water. As a macrocyclic ligand
Cyclam
Chemical compound
Thiamazole is soluble in water, ethanol and chloroform, but hardly soluble in ether. Thiamazole acts as a free radical scavenger for radicals such as the hydroxyl
Thiamazole
Functional group with the chemical structure R–S–S–R′
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Disulfide
Chemical compound
21-Crown-7 is an organic compound with the formula (C2H4O)7. Similar to other crown ethers, 21-crown-7 functions as a ligand for certain metal cations
21-Crown-7
Chemical group (R–O)
An ethoxy group (CH3CH2O−) is found in the organic compound ethyl phenyl ether (C6H5OCH2CH3, also known as ethoxybenzene). Related to alkoxy groups are
Alkoxy_group
Chemical compound
ether is less reactive than the corresponding sulfur mustard S(CH2CH2Cl)2. In the presence of base, it reacts with catechol to form dibenzo-18-crown-6:
Bis(chloroethyl)_ether
Class of chemical compounds
with common ethers, such as diethyl ether, diisopropyl ether, tetrahydrofuran, and 1,4-dioxane. An illustrative product is diethyl ether peroxide. Such
Hydroperoxide
Chemical group (–C3H7) derived from propane
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Propyl_group
Class of chemical compounds
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Imide
Chemical group (–CH2–CH=CH2)
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Allyl_group
Chemical derived from gypsum used in food and industry
sulfide CH3SCH3 Methionine Heterocycles C2H4S C4H4S Thiamine Biotin Thia-crown ether Sulfonium S-Adenosyl methionine S-Methylmethionine Dimethylsulfoniopropionate
Calcium_sulfate
Organic compounds with the structure R–S(=O)2–OH
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Sulfonic_acid
Chemical group (–CH=CH2)
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Vinyl_group
Compound derived from an acid
Leopold Gmelin, probably as a contraction of the German Essigäther, "acetic ether". The names of esters that are formed from an alcohol and an acid, are derived
Ester
Hydrocarbon compound (C6H6)
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Benzene
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Reductone
Chemical compound
sulfide CH3SCH3 Methionine Heterocycles C2H4S C4H4S Thiamine Biotin Thia-crown ether Sulfonium S-Adenosyl methionine S-Methylmethionine Dimethylsulfoniopropionate
Potassium_sulfate
Organic compound or functional group containing a C=N bond
intermediates in the synthesis of heterocycles. Aromatic imines react with an enol ether to a quinoline in the Povarov reaction. Imines react, thermally, with ketenes
Imine
Organosulfur compounds containing –S(=O)2–N< functional group
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Sulfonamide
Organic compounds of the form R–O–O–R′
cycloaddition of oxygen to alkenes. The hazards associated with storage of ethers in air is attributed to the formation of hydroperoxides via the direct albeit
Organic_peroxides
Chemical reaction
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Hydrodealkylation
Organosulfur compounds of the form R–SC(=O)–R′
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Thioester
Chemical group (R–C=O)
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Acyl_group
Organic compounds with a diazenyl group (–N=N–)
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Azo_compound
Lubricant additive
sulfide CH3SCH3 Methionine Heterocycles C2H4S C4H4S Thiamine Biotin Thia-crown ether Sulfonium S-Adenosyl methionine S-Methylmethionine Dimethylsulfoniopropionate
Zinc_dithiophosphate
"templating ion" can be difficult. The alkali metal-templated syntheses of crown ether syntheses are notable exceptions. Metal Phthalocyanines are generated
Template_reaction
Organic compound containing a –C(=O)OH group
These longer chain acids tend to be soluble in less-polar solvents such as ethers and alcohols. Aqueous sodium hydroxide and carboxylic acids, even hydrophobic
Carboxylic_acid
Salt that is a metal-thioate/O-esters of dithiocarbonate
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Xanthate
Organic compounds of the form >C=O
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Ketone
Organic compounds of the form RC(=O)NR′R″
William (1925). "CCLXIX.—Imino-aryl ethers. Part III. The molecular rearrangement of N-phenylbenziminophenyl ether". Journal of the Chemical Society, Transactions
Amide
Chemical compound
sulfide CH3SCH3 Methionine Heterocycles C2H4S C4H4S Thiamine Biotin Thia-crown ether Sulfonium S-Adenosyl methionine S-Methylmethionine Dimethylsulfoniopropionate
Gadolinium_oxysulfide
Chemical compound
Cyclen (1,4,7,10-tetraazacyclododecane) is an aza-crown ether with the formula (CH2CH2NH)4. It is a white solid. It forms coordination complexes with
Cyclen
Any organic compound having a sulfanyl group (–SH)
whereas the same is not true of alcohols and their corresponding isomeric ethers. Thiols having the structure R−S−H, in which an alkyl group (R) is attached
Thiol
Chemical compound
7-Triazacyclononane, known as "TACN" which is pronounced "tack-en," is an aza-crown ether with the formula (C2H4NH)3. TACN is derived, formally speaking, from
1,4,7-Triazacyclononane
Silver-based salt used in photographic film and traditional photographic paper
thiocyanate, thiosulfate, thiourea, amines, ammonia, sulfite, thioether, crown ether. Examples of compounds that reduces the solubility include many organic
Silver_halide
Chemical compound
sulfide CH3SCH3 Methionine Heterocycles C2H4S C4H4S Thiamine Biotin Thia-crown ether Sulfonium S-Adenosyl methionine S-Methylmethionine Dimethylsulfoniopropionate
Sodium_hydrosulfide
Sulfur-containing aromatic compound
sulfide CH3SCH3 Methionine Heterocycles C2H4S C4H4S Thiamine Biotin Thia-crown ether Sulfonium S-Adenosyl methionine S-Methylmethionine Dimethylsulfoniopropionate
Thiophene
Anion with formula OCN and charge –1
Arsinic acid Arsonic acid Arsole Sulfur Thiol Thioether Sulfonium Thia-crown ether Persulfide Disulfide Sulfenic acid Thiosulfinate Sulfoxide Thiosulfonate
Cyanate
Chemical compound
sulfide CH3SCH3 Methionine Heterocycles C2H4S C4H4S Thiamine Biotin Thia-crown ether Sulfonium S-Adenosyl methionine S-Methylmethionine Dimethylsulfoniopropionate
Sulfur_dichloride
Chemical compound
sulfide CH3SCH3 Methionine Heterocycles C2H4S C4H4S Thiamine Biotin Thia-crown ether Sulfonium S-Adenosyl methionine S-Methylmethionine Dimethylsulfoniopropionate
Carbonyl_sulfide
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CROWN ETHER
CROWN ETHER
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CROWN ETHER
CROWN ETHER
CROWN ETHER
CROWN ETHER
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CROWN ETHER
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