Dibenzo[a,j]-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-dien
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- CAS-Nr.
- 14187-32-7
- Bezeichnung:
- Dibenzo[a,j]-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-dien
- Englisch Name:
- Dibenzo-18-crown-6
- Synonyma:
- DB18C6;ibenzo-18-crown-6;6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecine;crown18;Crown 18;crown-18;Dibenzocrown;DIBENZO-18-CROWN-6;Dibenzo-18-crown-8;Tin(II) Ionophore I
- CBNumber:
- CB0436113
- Summenformel:
- C20H24O6
- Molgewicht:
- 360.4
- MOL-Datei:
- 14187-32-7.mol
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Dibenzo[a,j]-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-dien Eigenschaften
- Schmelzpunkt:
- 162-164 °C (lit.)
- Siedepunkt:
- 380-384 °C (679 mmHg)
- Dichte
- 1.1801 (rough estimate)
- Brechungsindex
- 1.5200 (estimate)
- Flammpunkt:
- 380-384°C/679mm
- storage temp.
- Store below +30°C.
- Löslichkeit
- 0.007g/l
- Aggregatzustand
- Fluffy Powder
- Farbe
- White to slightly beige
- Wasserlöslichkeit
- sparingly soluble
- maximale Wellenlänge (λmax)
- 277nm(CH2Cl2)(lit.)
- Sensitive
- air sensitive
- Merck
- 14,2602
- BRN
- 1162153
- InChIKey
- YSSSPARMOAYJTE-UHFFFAOYSA-N
- CAS Datenbank
- 14187-32-7(CAS DataBase Reference)
- NIST chemische Informationen
- Dibenzo-18-crown-6(14187-32-7)
- EPA chemische Informationen
- Dibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecin, 6,7,9,10,17,18,20,21-octahydro- (14187-32-7)
Dibenzo[a,j]-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-dien Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R36:Reizt die Augen.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R20/21/22:Gesundheitsschädlich beim Einatmen,Verschlucken und Berührung mit der Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Beschreibung
Dibenzo-18-crown-6 (DB18C6) is the first crown ether synthesized by Pedersen in 1967 and has the strongest binding affinity to a potassium cation (K+) among alkali metal cations. With the similarity of the sizes between K+ and the cavity of crown ether, it had long been believed that the binding selectivity comes from the size relationship between the metal cation and the cavity. However, it was reported that under identical experimental conditions, K+ bound strongly to all crown ethers (12-crown-4 to 24-crown-8) irrespective of the ring size among other cations such as Na+, Ca2+, and NH4+. Moreover, in the gas phase, 18-crown-6 (18C6) and dibenzo18-crown-6 (DB18C6) form preferential complexation in the order Li+ > Na+ > K+ > Rb+ > Cs+, while in the aqueous solution both of them show highest complexion capacity for K+ rather than Li+[1-2].
Chemische Eigenschaften
white to slightly beige fluffy powder
Verwenden
Dibenzo-18-crown-6, is used as an important raw material and intermediate used in organic Synthesis, pharmaceuticals, agrochemicals and dyestuff. It is an important organic intermediate.
läuterung methode
Crystallise it from *benzene, n-heptane or toluene and dry it under vacuum at room temperature for several days. [Szezygiel J Phys Chem 91 1252 1987, V.gtle ed. Top Corr Chem (Host Guest Complex Chemistry) 98 1981.]
Dibenzo[a,j]-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-dien Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Dibenzo[a,j]-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-dien Anbieter Lieferant Produzent Hersteller Vertrieb Händler.
Global( 512)Lieferanten
14187-32-7(Dibenzo[a,j]-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-dien)Verwandte Suche:
Benzophenon
Bis(2-ethylhexyl) phthalate
Diphenylether
1,4,7,10-Tetraoxacyclododecan
p-Phenylendiamin
Isophthalsure
Phthalsure
Kaliumhydrogenphthalat
1,4,7,10,13,16-Hexaoxacycloocta-decan
Diethylether
Icosahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecin
Dibenzo[a,j]-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-dien
- CROWN ETHER/DIBENZO-18-CROWN-6
- DIBENZO-18-CROWN-6
- dibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecin,6,7,9,10,17,18,20,21-octahyd
- dibenzo[bk][1,4,7,10,13,16]hexaoxacyclooctadecane
- Dibenzocrown
- Diphenyl-18-crown-6-polyether
- k](1,4,7,10,13,16)hexaoxacyclooctadecin,6,7,9,10,17,18,20,21-octahydro-Dibenzo[b
- 6,7,9,10,12,13,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclo-octadecin
- Dibenzocrownminwhitepowder
- dibenzo[a,j]-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene
- 2,3,11,12-Dibenzo-1,4,7,10,13,16-Hexaoxacyclooctad
- Tin(II) Ionophore I
- DIBENZO-18-CROWN-6(6,7,9,10,17,18,20,21-OCTAHYDRODIBENZO)
- 6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]
- hexaoxacyclooctadecene
- Crown ether/Dibenzo-18-crown-6 for synthesis
- DIBENZO-18-CROWN 6-ETHER
- 2,3,11,12-DIBENZO-1,4,7,10,13,16-HEXAOXACYCLOOCTADECA-2,11-DIENE
- 6,7,9,10,17,18,20,21-OCTAHYDRODIBENZO
- 6,7,9,10,17,18,20,21-OCTAHYDRODIBENZO[B,K][1,4,7,10,13,16]HEXAOXACY-CLOOCTADECENE
- CROWN ETHER/DIBENZO-18-CROWN-6 FOR SYNTH
- Dibenzo-18-crown-6 Dibenzo-18-crown-6 ,98%
- Dibenzo-18-crown-6, 98% 10GR
- Dibenzo-18-crown-6, 98% 50GR
- Dibenzo-18-crown-6, 6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecene, 2,3,11,12-Dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene
- 6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecene, 2,3,11,12-Dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene
- Dibenzo-18-crown-6, min. 98%
- 2,2'-[Oxybis(ethyleneoxy)]-[1,1'-[oxybis(ethyleneoxy)]bisbenzene]
- 2,2'-[Oxybis(ethyleneoxy)][1,1'-[oxybis(ethyleneoxy)]bisbenzene]
- Diabenzo-18-crown-6
- Dibenzo-18-crown-6 ,97%
- Dibenzo-18-crown-6,2,3,11,12-Dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene, 6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecene
- 2,3,11,12-dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene,dibenzo-18-crown-6
- 6,7,9,10,17,18,20,21-octahydrodibenzo(b,k)(1,4,7,10,13,16)hexaoxacyclooctade
- 6,7,9,10,17,18,20,21-OCTAHYDRODIBENZO(b,k)(1,4,7,10,13,16)HEXAOXACYCLOOCTADECIN
- Crown 18
- crown18
- crown-18
- Dibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecane
- Dibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecin, 6,7,9,10,17,18,20,21-octahydro-
- 1,4,7,14,17,20-HEXAOXA-[7.7]ORTHOCYCLOPHANE
- Dibenzo-18-crown-6, 98+%
- Dibenzo-18-crown-6,min.98%
- 1,4,7,14,17,20-HEXAOXA[7.7]ORTHOCYCLOPHANE
DIBENZO-18-CROWN-6
- Diphenyl and - 18 - crown ether - 6
- Dibenzo-18-crown-6 98%
- dibenzanthrance-18-crown-6
- 6,7,9,10,12,13,15,16-Octahydrodibenzo[b,e][1,4,7,10,13,16]hexaoxacyclooctadecine
- Dibenzo-18-crown6-Ether>
- Dibenzo-18-crown-6, 98%, reagent grade
- Dibenzo[a,j]-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-dien
- 6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecine
- DB18C6
- ibenzo-18-crown-6
- Dibenzo-18-crown-8
- Dibenzo-18-crown-ether-6
- 2,5,8,15,18,21-hexaoxatricyclo[20.4.0.0?,1?]hexacosa-1(26),9,11,13,22,24-hexaene
- Dibenzanthracene-18-Crown-6
