12-Crown-4

12-Crown-4

Chembox new
ImageFile = 12-crown-4 skeletal.svg
ImageSize =
IUPACName = 1,4,7,10-tetraoxacyclododecane
OtherNames = 12-crown-4, Lithium Ionophore V
Section1 = Chembox Identifiers
CASNo = 294-93-9
PubChem =
SMILES =

Section2 = Chembox Properties
Formula = C8H16O4
MolarMass = 176.21
Appearance =
Density = 1.089 g/mL at 25 deg C
MeltingPt = 16 deg C
BoilingPt = 61-70 deg C/0.5 mm Hg
Solubility =

Section3 = Chembox Hazards
MainHazards =
FlashPt = 113 deg C
Autoignition =

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 ethylene oxide which is specific for the lithium cation.

References

* Sigma-Aldrich Handbook of Fine Chemicals, 2007, page 768.

ee also

*Crown ether
*Cyclen, a similar molecule with N atoms (aza groups) instead of O atoms (ethers)


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