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33539

Dibenzo-24-crown-8

Name: Dibenzo-24-crown-8
Brand: SIGMA

purum, ≥98.0% (UV)

Synonym(s):

2,3,14,15-Dibenzo-1,4,7,10,13,16,19,22-octaoxacyclotetracosa-2,14-diene, 6,7,9,10,12,13,20,21,23,24,26,27-Dodecahydrodibenz[b,n]-1,4,7,10,13,16,19,22-octaoxacyclotetracosane

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About This Item

Empirical Formula (Hill Notation):

C₂₄H₃₂O₈

CAS Number:

14174-09-5

Molecular Weight:

448.51

EC Number:

238-027-7

UNSPSC Code:

12350000

MDL number:

MFCD00005101

Beilstein/REAXYS Number:

1693744

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Properties

grade

purum

assay

≥98.0% (UV)

mp

103-105 °C (lit.), 103-107 °C

SMILES string

C1COCCOc2ccccc2OCCOCCOCCOc3ccccc3OCCO1

InChI

1S/C24H32O8/c1-2-6-22-21(5-1)29-17-13-25-9-10-27-15-19-31-23-7-3-4-8-24(23)32-20-16-28-12-11-26-14-18-30-22/h1-8H,9-20H2

InChI key

UNTITLLXXOKDTB-UHFFFAOYSA-N

Description

Other Notes

Macrocyclic complexing agent for cations

Storage Class

13 - Non Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

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Guest-dependent complexation of triptycene-based macrotricyclic host with paraquat derivatives and secondary ammonium salts: a chemically controlled complexation process.

Jian-Min Zhao et al.

The Journal of organic chemistry, 73(17), 6800-6806 (2008-08-05)

The triptycene-based macrotricyclic host containing two dibenzo-[24]-crown-8 moieties has been found to form stable 1:1 or 1:2 complexes in different complexation modes with different functional paraquat derivatives and secondary ammonium salts in solution and in the solid state. Consequently, the

Complexation between methyl viologen (paraquat) bis(hexafluorophosphate) and dibenzo[24]crown-8 revisited.

Travis B Gasa et al.

Chemistry (Weinheim an der Bergstrasse, Germany), 15(1), 106-116 (2008-12-17)

Paraquat bis(hexafluorophosphate) undergoes stepwise dissociation in acetone. All three species-the neutral molecule, and the mono- and dications-are represented significantly under the experimental conditions typically used in host-guest binding studies. Paraquat forms at least four host-guest complexes with dibenzo[24]crown-8. They are

Dipotassium and sodium/potassium crystalline picrate complexes with the crown ether 6,7,9,10,12,13,20,21,23,24,26,27-dodecahydrodibenzo[b,n]-[1,4, 7,10,13,16,19,22]octaoxacyclotetracosin (dibenzo-24-crown-8).

T Gallagher et al.

Acta crystallographica. Section B, Structural science, 47 ( Pt 3), 362-368 (1991-06-01)

The crystal structures of the dipotassium and the mixed sodium/potassium picrate complexes with the crown ether dibenzo-24-crown-8 (DB24C8) were solved and found to be nearly identical. (I): NaK-pic2(DB24C8), [NaK(C6H2N3O7)2(C24H32O8)]. Mr = 966.8, triclinic, P1, a = 8.164 (2), b =

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Global Trade Item Number

SKU	GTIN
33539-1L-R	04061826739853
33539-4X2.5L-R	04061826739891
33539-6X1L-R	04061837672484