![]() | |
Names | |
---|---|
Preferred IUPAC name
1,4,7,10,13,16,19-Heptaoxacyclohenicosane | |
Identifiers | |
3D model (JSmol)
|
|
ChemSpider | |
ECHA InfoCard | 100.046.689 |
EC Number |
|
PubChem CID
|
|
UNII | |
CompTox Dashboard (EPA)
|
|
| |
| |
Properties | |
C14H28O7 | |
Molar mass | 308.371 g·mol−1 |
Related compounds | |
Related compounds
|
Dibenzo-21-crown-7 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|
21-Crown-7 is an organic compound with the formula [C2H4O]7 and the IUPAC name 1,4,7,10,13,16,19-heptaoxacycloheneicosane. Similar to other crown ethers, 21-crown-7 functions as a ligand for certain metal cations, with a specific affinity for caesium cations.[1] The dipole moment of 21-crown-7 varies depending on the solvent and temperatures.
References
[edit]- ^ Frensdorff, Hans K. (1 February 1971). "Stability constants of cyclic polyether complexes with univalent cations". Journal of the American Chemical Society. 93 (3): 600–606. doi:10.1021/ja00732a007.
External links
[edit]