9-Crown-3

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 yield by the acid-catalyzed oligomerization of ethylene oxide.^[1]

Quick facts Names, Identifiers ...

9-Crown-3

Names
Preferred IUPAC name 1,4,7-Trioxonane
Other names 1,4,7-Trioxacyclononane; Ethylene oxide trimer
Identifiers
CAS Number	27725-91-3
3D model (JSmol)	Interactive image
Beilstein Reference	1421638
ChEBI	CHEBI:32400
ChemSpider	480221
PubChem CID	552016
CompTox Dashboard (EPA)	DTXSID70338923
InChI InChI=1S/C6H12O3/c1-2-8-5-6-9-4-3-7-1/h1-6H2 Key: RCIDBLLMZGGECJ-UHFFFAOYSA-N
SMILES C1COCCOCCO1
Properties
Chemical formula	C6H12O3
Molar mass	132.159 g·mol−1
Appearance	Colorless liquid
Melting point	0 Â°C (32 Â°F; 273 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 Â°C [77 Â°F], 100 kPa). Infobox references

Close

In contrast to larger crown ethers (12-crown-4, and 18-crown-6), 9-crown-3 has elicited very little interest, except from theorists.^[2][3]