18 crown 6

18-Crown-6 is an organic compound with the formula [C 2 H 4 O] 6 and the IUPAC name of 1,4,7,10,13,16-hexaoxacyclooctadecane. It is a white, 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 affinity for potassium cations (binding constant in methanol: 10 6 M −1) 18-Crown-6 is the simplest crown ether that can be prepared by reacting triethylene glycol with triethylene glycol dichloride in the presence of potassium hydroxide as a base. 18-Crown-6 can solubilize metal salts, particularly potassium salts, in nonpolar and dipolar aprotic solvents. Thus, it is widely used as a phase transfer catalyst. It can also be used as a metal complexing agent to. 18-Crown-6 can be used as a model for crown ethers to study the effect of acid-base properties of mixed solvent on their solution enthalpy. It is generally used as a phase transfer catalyst and a complexing agent. It specifically binds to potassium ion, ammonium or protonated alkyl amines to form complexes. Can be useful as phase-transfer catalysts. Other Notes Macrocyclic polyethers with. Crown ether/18-Crown-6 for synthesis. CAS 17455-13-9, molar mass 264.32 g/mol. Biologische Informationen; Physiochemische Informationen; Flammpunkt: 109 °C: Schmelzpunkt: 36 - 39 °C: Abmessungen; Materialinformationen; Angaben zur Toxikologie; LD50 oral: LD50 Ratte 525 mg/kg: LD50 dermal: LD50 Kaninchen 3888 mg/kg : Sicherheitsinformationen gemäß GHS; Gefahrensymbol(e) Gefahrenhinweis(e.

18-Crown-6, ≥99.0% (GC), Honeywell™ Fluka™ 5g; Glass Bottle 18-Crown-6, ≥99.0% (GC), Honeywell™ Fluka™ Dialkyl ether 18-Crown-6 is an organic compound with the formula [C 2 H 4 O] 6 and the IUPAC name of 1,4,7,10,13,16-hexaoxacyclooctadecane. The compound is a crown ether.Crown ethers coordinate some metal ions in their central cavity, and 18-crown-6 displays an affinity for potassium ions Structure, properties, spectra, suppliers and links for: 18-Crown-6, 17455-13-9

18-Crown-6 - Wikipedi

  1. Chemical structure of the 18-crown-6 ether, created using BKchem: Datum: 11. Januar 2007: Quelle: Eigenes Werk: Urheber: This vector image was first created with Adobe Illustrator by Bryan Derksen, and then manually redrawn. Diese Geometrie wurde mit.
  2. ation of the same substrate in the presence of K 2 CO 3. This procedure is particularly convenient for the preparation of symmetrically di- and trisubstituted, optically active alkyla
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  4. BuGuCh & Partners ist Lieferant für 18-Crown 6-Ether. Wir sind Lieferant von Potassium phenolate.Die Tetenal Gruppe ist ein international tätiges, innovatives Unternehmen, führend in der Entwicklung und Fertigung analoger und digitaler Imaging-Technologien. szmta
  5. Amazon.de: EMD Millipore 8.11731.0050 Crown Ether/Dibenzo-18-Crown-6 für Synthese, 50 g - Schneller & kostenloser Versand ab 29€. Jetzt bestellen

18-Crown-6. 17455-13-9. 1,4,7,10,13,16-HEXAOXACYCLOOCTADECANE. 18-Crown-6 ether. Ethylene oxide cyclic hexamer. More... Molecular Weight: 264.31 g/mol. Dates: Modify: 2020-10-10. Create: 2004-09-16. 18-crown-6 is a crown ether and a saturated organic heteromonocyclic parent. ChEBI. Contents. 1 Structures Expand this section. 2 Names and Identifiers Expand this section. 3 Chemical and Physical. 18-Crown-6 - chemical structure, common uses, and safety. Ligand for certain cations (K+, Na+, etc.) in substitution reactions (ex. tosylate substitution) Procedure excerpt diaza-18-crown-6 (en) Diaza-[18]Krone-6 (de) Datum: 04.04.08: Quelle: Eigenes Werk: Urheber: Yikrazuul: Lizenz. Public domain Public domain false false: Ich, der Urheberrechtsinhaber dieses Werkes, veröffentliche es als gemeinfrei. Dies gilt weltweit. In manchen Staaten könnte dies rechtlich nicht möglich sein. Sofern dies der Fall ist: Ich gewähre jedem das bedingungslose Recht, dieses.

Red crystals of the title salt, [K(C12H24O6)][Sb(C6H5)2], were obtained by the reaction of SbPh3, KSnBi and 18-crown-6 in liquid ammonia. The asymmetric unit contains one half of a [K(18-crown-6)]+ cation and one half of an SbPh2- anion, with the central element lying on a twofold axis and a centre of inversion, respectively. In the crystal structure, the sequestered potassium cations show. Visit ChemicalBook To find more 18-Crown-6 (17455-13-9) information like chemical properties,Structure,melting point,boiling point,density,molecular formula,molecular weight, physical properties,toxicity information,customs codes. You can also browse global suppliers,vendor,prices,Price,manufacturers of 18-Crown-6 (17455-13-9). At last,18-Crown-6 (17455-13-9) safety, risk, hazard and MSDS, CAS.

18-Crown-6 >= 99

Der Text dieser Seite basiert auf dem Artikel Datei:18-crown-6.svg aus der freien Enzyklopädie Wikipedia und ist unter der Lizenz Creative Commons Attribution/Share Alike verfügbar. Die Liste der Autoren ist in der Wikipedia unter dieser Seite verfügbar, der Artikel kann hier bearbeitet werden. Informationen zu den Urhebern und zum Lizenzstatus eingebundener Mediendateien (etwa Bilder. [Cs(18-crown-6) 2] + e - is known as an electride, containing solvated 'electrons'. The electrons in the diagram above represent regions where electron density is at a maximum Enantiomeric Recognition of Organic Ammonium Salts by Chiral Dialkyl-, Dialkenyl-, and Tetramethyl-Substituted Pyridino-18-Crown-6 and Tetramethyl- Substituted Bis-Pyridino-18-Crown-6 Ligands: Comparison of Temperature-Dependent 1H NMR and Empirical Force | Jerald S. Bradshaw | ISBN: | Kostenloser Versand für alle Bücher mit Versand und Verkauf duch Amazon Einzigartig - Grogg-Shop mit über 700'000 Artikeln mit den kompletten Sortimenten von VWR, Merck, Sigma-Aldrich, Semadeni, Honeywell, Borer Chemie, Grogg-Eigenabfüllungen und -Produktionen

18-Crown-6 purum, >= 99

Viele übersetzte Beispielsätze mit 18-crown-6 - Deutsch-Italienisch Wörterbuch und Suchmaschine für Millionen von Deutsch-Übersetzungen Dicyclohexano-18-crown-6,98% (2,3,11,12-Dicyclohexano-1,4,7,10,13,16-hexaoxacyclooctadecane; 2,5,8,15,18,21-Hexaoxatricyclo[20.4..09.14]hexacosane; Dicyclohexyl-18.

Kronenether/18-Krone-6 CAS 17455-13-9 81168

18-Crown-6, ≥99.0% (GC), Honeywell™ Fluka™ 5g; Glass ..

Finden Sie eine große Auswahl an Organooxygen compounds -Produkten und erfahren Sie mehr über 18-Crown-6, ≥99.0% (GC), Honeywell™ Fluka™ 5g; Glass Bottle 18-Crown-6 18-Crown 6-Ether; 1,4,7,10,13,16-Hexanoxacyclooctadecane; Cyclic Hexamer of Ethylene oxide; Crown ether 18-crown-6; Hexaoxacyclo-octadecane; Other RN: 63172-42-9; 65154-22-5; 66037-87-4; 71210-94-1; 71211-03-5. Dibenzo-18-crown-6. Jump to navigation Jump to search. Dibenzo-18-crown-6 Identifiers CAS Number. 14187-32-7 3D model . Interactive image; ChEBI: CHEBI. Supramolecular cations of HOPD+([18]crown-6) and HMPD+([18]crown-6) were introduced into [Ni(dmit)2]− salts (HOPD+: o-aminoanilinium, HMPD+: m-aminoanilinium, and dmit2−: 2-thioxo-1,3-dithiole-4,5-dithiolate). Alternate layers of cations and anions were observed in the two new salts of (HOPD+)([18]crown-6)[Ni(dmit Find here online price details of companies selling 18-Crown-6. Get info of suppliers, manufacturers, exporters, traders of 18-Crown-6 for buying in India

(organic chemistry) The crown ether 1,4,7,10,13,16-hexaoxacyclooctadecan 18-CROWN-6 17455-13-9 No Formula C12H24O6 Synonyms 18-Crown-6 * 18-Crown ether 6 * Ethylene oxide cyclic hexamer RTECS Number: MP4500000 Section 3 - Hazards Identification EMERGENCY OVERVIEW Harmful. Harmful if swallowed. Irritating to eyes, respiratory system and skin. Target organ(s): Nerves Category:18-crown-6. From Wikimedia Commons, the free media repository. Jump to navigation Jump to search. 18-crown-6 chemical compound. Upload media Wikipedia: Instance of: chemical compound, crown ether: Has part: oxygen; carbon; Mass: 264.157 Da; Authority control Q3238432. Reasonator; PetScan; Scholia; Statistics; Media in category 18-crown-6 The following 15 files are in this category.

18-Crown-6 - chemeurope

  1. Shop a large selection of Organooxygen compounds products and learn more about 18-Crown-6, 99%, ACROS Organics. 5g; Glass bottle
  2. Hinweis. Weitere Einheiten auf Anfrage. Sämtliche Preise verstehen sich zzgl. MwSt., Versandkosten und ggf. Gebühren (s. §7 AGB). Für bestimmte Länder, Produktlinien und Gefahrgutklassen können die Preise abweichen
  3. 18-Crown-6 - Get Contact details and address of the manufacturer, supplier, wholesalers, exporters, traders, and distributors of 18-Crown-6 on the latest price in India

IUPAC Standard InChIKey: BBGKDYHZQOSNMU-UHFFFAOYSA-N CAS Registry Number: 16069-36-6 Chemical structure: This structure is also available as a 2d Mol file; Other. Information for 18-Crown-6 17455-13-9 including 18-Crown-6 CAS NO 17455-13-9, 18-Crown-6 Suppliers, 18-Crown-6 Manufacturers, related products of 18-Crown-6 18-Crown-6 is an organic compound with the formula [C 2 H 4 O] 6 and the IUPAC name of 1,4,7,10,13,16-hexaoxacyclooctadecane.wikipedia. 43 Related Articles [filter] Crown ether. 100% (1/1) crown ethers. Like other crown ethers, 18-crown-6 functions as a ligand for some metal cations with a particular affinity for potassium cations (binding constant in methanol: 10 6 M −1 ). Apart from its. Anson Chemical Industries - Offering 18 Crown 6, Packaging: 500 gm at Rs 8000/kilogram in Noida, Uttar Pradesh. Read about company. Get contact details and address | ID: 2040306429 Buy 1-Aza-18-crown-6 (CAS 33941-15-0), a product for proteomics research, from Santa Cruz. Molecular Formula: C12H25NO5, Molecular Weight: 263.3

Photoprocesses of bis(18-crown-6)-1,3-distyrylbenzene (DSB) and its complexes with barium and lead perchlorates in a MeCN-CH 2 Cl 2 (9:1, v/v) mixture were studied by absorption, luminescence, and laser kinetic spectroscopies. Unlike its strongly conjugated 1,4-isomer, 1,3-derivative shows almost independent behavior of its chromophoric subunits and is capable of phototransformations not. Molbase found 87 18-Crown-6 product information for you, including 18-Crown-6 formula, 18-Crown-6 CAS number, 18-Crown-6 supplier information The Water-18-Crown-6 System: Experimental Investigation and Thermodynamic Modeling. Journal of Chemical & Engineering Data 2013, 58 (1) , 159-166. DOI: 10.1021/je301087w. Irina A. Tikhonova, Dmitry A. Gribanyov, Kirill I. Tugashov, Fedor M. Dolgushin, Alexandr F. Smol'yakov, Alexandr S. Peregudov, Zinaida S. Klemenkova and Vladimir B. Shur. Complexation of [12]Crown-4, [18]Crown-6, and 1,3. To 50 g. of the crude 18-crown-6 in a 250-ml. Erlenmeyer flask is added 100 ml. of acetonitrile.A magnetic stirring bar is added, and the flask is equipped with a calcium chloride drying tube.The resulting slurry is heated on a hot plate to effect solution. The solution is stirred vigorously as it is allowed to cool to ambient temperature; fine white crystals of crown-acetonitrile complex are.

18-Crown-6 C12H24O6 ChemSpide

  1. Dicyclohexano-18-crown-6, mixture of isomers, 97%. Artikelnummer: A15344.03. Mengeneinheit: 1 G. Verpackung: Glasflasche für Feststoffe. 47.30 CHF 47.30 CHF Das Produkt ist nicht verfügbar. In den Warenkorb . Aktuelle Lieferfrist auf Anfrage. Synonyme: Dicyclohexano-18-crown-6.
  2. Synonyme: 1,10-Diaza-18-crown-6 (1,4,10,13-tetraoxa-7,16-diazacyclooctadecane kryptofix® 22);Diaza-18-crown-6;1-10-Diaza-18-crown-6-1-4-10-13-tetraoxa-7-16-diazacyclooctadecane-kryptofix-22. CAS-Nummer: 23978-55-4. Hersteller: ALFA (AESAR) Herstellernummer: H51063.MD. Summenformel: C12H26N2O4. Sicherheitsdatenblatt (andere Sprachen auf Anfrage) Zurück zur Homepage. Home; Nehmen Sie Kontakt.
  3. A complex of 18-crown-6 and KF is effective as a soluble fluoride source to activate asymmetric Sakurai-Hosomi allylations and asymmetric Mukaiyama-type aldol reactions using BINAP and silver(I) triflate as catalyst. Allylations and aldol reactions give products in high yields and remarkable enantioselectivities. see article for more examples. Silver-Catalyzed Asymmetric Sakurai-Hosomi.
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  5. 18-Crown-6 17455-13-9 Suppliers,provide 18-Crown-6 17455-13-9 product and the products related with China (Mainland) 18-Crown-6 17455-13-9 Henan Sinotech Import&Export Corporation China (Mainland
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  7. Finden Sie eine große Auswahl an Organooxygen compounds -Produkten und erfahren Sie mehr über Alfa Aesar™ Dibenzo-18-krone-6, 98+ %: Ethers Organooxygen compound

Datei:18-crown-6.svg - Wikipedi

18-Crown-6. Min.Order: 1 Kilogram FOB Price: USD $ 0.0-0.0/Kilogram Joyinchem have been committed to chemical supply for several years and have built good cooperation records with multinational chemical corporations and importers from all over the world The complexation reactions of dibenzo-18-crown-6 (DB18C6) with Ce 3+, Y 3+, \(\mathrm{UO}_{2}^{2 +}\) and Sr 2+ cations were studied in acetonitrile-dioxane (AN-dioxane) binary solvent solutions at different temperatures by the conductometric method. The stability constants of the resulting 1:1 complexes were determined from computer fitting of the conductance-mole ratio data Crystallographic Information File (CIF) https://doi.org/10.1107/S2056989019015238/hb4322sup1.cif Contains datablock I Structure factor file (CIF format) https://doi. 18-Crown-6 ether. Discover > 18-Crown-6 ether. 3DPX-001805 18-crown-6 clucy. 18-Crown-6, 1,4,7,10,13,16-HEXAOXACYCLOOCTADECANE, 17455-13-9, 18-Crown-6 ether, Ethylene oxide cyclic hexamer, Hexaoxacyclooctadecane, CCRIS 3587, CHEBI:32397, XEZNGIUYQVAUSS-UHFFFAOYSA-N, EINECS 241-473-5. Discover 3D Prints . Browse 3D-printable models; View special Collections; See Prints from Users; Community.

18-Crown-6 17455-13-9 Suppliers,provide 18-Crown-6 17455-13-9 product and the products related with China (Mainland) 18-Crown-6 17455-13-9 HANGZHOU CLAP TECHNOLOGY CO,.LTD China (Mainland 18-Crown-6 17455-13-9 Suppliers,provide 18-Crown-6 17455-13-9 product and the products related with China (Mainland) 18-Crown-6 17455-13-9 Hefei TNJ chemical industry co.,ltd China (Mainland) Hefei TNJ chemical industry co.,ltd. PVP,N-Methylpyrrolidone,N-Ethylpyrrolidone,Salicylic acid, Lanolin, Sorbitol,Menthol,Methyl salicylate,Essential oil,Sodium borohydride etc. Diamond Supplier 5 th year. A cylindrical macrocycle with two diaza-18-crown-6 macrocycles encapsulating two silver cations. In: Acta crystallographica, C 55S. C1, [Artikel] Typ des Eintrags: Artikel Erschienen: 1999: Autor(en): Plenio, Herbert; Diodone, R. Titel: A cylindrical macrocycle with two diaza-18-crown-6 macrocycles encapsulating two silver cations : Sprache: Englisch: Titel der Zeitschrift, Zeitung oder. 18-Crown-6 17455-13-9 Suppliers,provide 18-Crown-6 17455-13-9 product and the products related with China (Mainland) 18-Crown-6 17455-13-9 Chemwill Asia Co., Ltd. China (Mainland 18-Crown-6 17455-13-9 Suppliers,provide 18-Crown-6 17455-13-9 product and the products related with China (Mainland) 18-Crown-6 17455-13-9 Amadis Chemical Co., Ltd. China (Mainland) Amadis Chemical Co., Ltd. CAS#113852-37-2 Cidofovir CAS#21679-14-1 Fludarabine CAS#20235-78-3 2-Thiouridine CAS#2524-49-4 3-buten-1-amine CAS#123402-21-1 3'-Deoxy-3'-fluoroguanosine CAS#30725-00-9 D-(2,3.

18-Crown-6 - an overview ScienceDirect Topic

18-Kronen-6, 99 %, ACROS Organics™ 500 g-Glasflasche 18

Structure, properties, spectra, suppliers and links for: Dibenzo-18-crown-6, 14187-32-7 18-CROWN-6 CAS Number 17455-13-9;18-CROWN-6 CAS Number 17455-13-9 RPI Part Number C-784 Quantity available upon reques Aza crown ether. In chemistry, an aza crown ether is an aza analogue of a crown ether. While the parent crown 1,4,7,10,13,16-Hexaazacyclooctadecane.Org. Syn. 58: 86 Abstract Abstract— A cation exchange polymer resin embedded with magnetic nanoparticles and modified with crown ether was developed for urinalysis to rapidly monitor levels of 90 Sr exposure in humans who have been involved in a nuclear event. Invention of the resin matrix of 2-acrylamido-2-methyl-1-propanesulfonic acid cross-linked with divinylbenzene incorporated a Sr 2+ chelating agent.

18-Crown-6 - WikipediaCrown ether - Wikipedia

18-Crown 6-Ether 17455-13-9 Lieferanten - BuyersGuideChe

T1 - The dipole moment of 18-crown-6: molecular dynamics study of the structure and dynamics of the macrocycle in vacuo and in cyclohexane. AU - Leuwerink, F.T.H. AU - Briels, Willem J. PY - 1995. Y1 - 1995. N2 - We have performed very long simulations of the 18-crown-6 molecule in the gas phase and in cyclohexane. For the isolated molecule we have used two different sets of charges. For all. 18-crown-6 Ether , Find Complete Details about 18-crown-6 Ether,18-crown-6 Ether,18-crown-6 Ether 17455-13-9,High Quality 18-crown-6 Ether from Catalysts Supplier or Manufacturer-Wuhan Dachu Hexing Technology Co., Ltd

Molecular Symmetry - Operations, Inversion Center andInorganics | Free Full-Text | Structural Study ofCrown Ether - Chemistry LibreTexts

EMD Millipore 8.11731.0050 Crown Ether/Dibenzo-18-Crown-6 ..

Information for 18-Crown-6 17455-13-9 including 18-Crown-6 CAS NO 17455-13-9, India 18-Crown-6 Suppliers, India 18-Crown-6 Manufacturers, related products of 18-Crown-6 18-crown-6: CAS Type 1 Name 1,4,7,10,13,16-hexaoxacyclooctadecane: CAS Registry Number 17455-13-9 Structure : Curation Status No associations have been curated for this chemical yet. Request curation. MeSH ® ID C015762: External Links.

Cyanohydrin reaction - WikipediaCrystals | Free Full-Text | The First Chelate-Free Crystal

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa) Hexaaza-18-crown-6 is the macrocyclic ligand with the formula 6. A white solid, this compound has attracted attention as the N6-analogue of 18-crown-6. More info. Aza-crown ether. Well studied aza crowns include triazacyclononane (n = 3), cyclen (n = 4), and hexaaza-18-crown-6 (n = 6). Synthesis[edit]. The synthesis of aza crown ethers are More info. www.wikiy.org wiki Hexaaza 18 Crown 6. In the crystal of the title compound, (C4H12N)[FeCl4]·C12H24O6, the butan-1-aminium cation and the tetra­chloridoferrate(III) anion have m symmetry: in the cation, the non-H atoms are located on the mirror plane and in the anion, the FeIII atom and two Cl atoms are located on the mirror plane. The 18-crown-6 mol­ecule also has m symmetry, with two O atoms located on the mirror plane Dibenzo-18-crown-6 (DB18C6) exhibits the binding selectivity for alkali metal cations in solution phase. In this study, we investigate the main forces that determine the binding selectivity of DB18C6 for the metal cations in aqueous solution using the density functional theory (DFT) and the conductor-like polarizable continuum model (CPCM) We are 18-crown-6 CAS:17455-13-9 manufacturer and supplier in China, Pls send inquiry of to info@nbinno.com of visit www.nbinno.com our official website should you have any interests. Chemical Name: 18-crown-6 CAS.NO: 17455-13-9 Molecular Formula: C12H24O6 Molecular Weight: 264.31500. Synonyms: 1,4,7,10,13,16-Hexaoxacyclooctadecane [18]crown-6. Global 18-Crown-6 market size was ** billion USD in 2019, and will expand at a CAGR of **% from 2020 to 2025, according to the report. Global and Chinese 18-Crown-6 Market 2020 is a professional and in-depth study on the current state of the global market with a focus on the Global and Chinese market. The report provides key statistics on market. It is a valuable source of guidance and.

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