Tetrakis(cyclopentadienyl)uranium(IV), U(C5H5)4, abbreviated U(Cp)4, is an organouranium compound composed of a uranium atom sandwiched between four cyclopentadienide rings.
Names | |
---|---|
IUPAC name
Tetrakis(η5-cyclopentadienyl)uranium(IV)
| |
Other names
Tetracyclopentadienyluranium
U(Cp)4 | |
Identifiers | |
| |
3D model (JSmol)
|
|
ChemSpider |
|
PubChem CID
|
|
| |
| |
Properties | |
C20H20U | |
Appearance | red crystals |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
(what is ?)
Infobox references
|
Tetrakis(cyclopentadienyl)uranium(IV) was first prepared in 1962 by Ernst Otto Fischer, who reacted uranium tetrachloride with excess potassium cyclopentadienide in benzene and obtained the complex as red crystals at 6% yield:[1][2]
Solid crystals of U(Cp)4 are air-stable, but the benzene solution is extremely air-sensitive.
Reduction of U(Cp)4 with uranium metal yields tris(cyclopentadienyl)uranium(III), U(Cp)3.[1]