Английская Википедия:Cyclooctatetraenide anion
Шаблон:Short description Шаблон:Chembox
In chemistry, the cyclooctatetraenide anion or cyclooctatetraenide, more precisely cyclooctatetraenediide, is an aromatic species with a formula of [C8H8]2− and abbreviated as COT2−. It is the dianion of cyclooctatetraene. Salts of the cyclooctatetraenide anion can be stable, e.g., Dipotassium cyclooctatetraenide or disodium cyclooctatetraenide. More complex coordination compounds are known as cyclooctatetraenide complexes, such as the actinocenes.
The structure is a planar symmetric octagon stabilized by resonance, meaning each atom bears a charge of −Шаблон:Sfrac. The length of the bond between carbon atoms is 1.432 Å. There are 10 π electrons.[1] The structure can serve as a ligand with various metals.
List of salts
name | formula | CAS | remarks | references |
---|---|---|---|---|
Samarium(II) cyclooctatetraenide | Sm(C8H8) | [2] | ||
Dipotassium samarium(II) cyclooctatetraenide | K2Sm(C8H8)2 | [2] | ||
Neodymium cyclooctatetraenide | Nd(C8H8)2 | |||
Terbium cyclooctatetraenide | Tb(C8H8)2 | |||
Protactinocene | (Pa(C8H8)2) | |||
Thorocene | (Th(C8H8)2) | |||
Uranocene | U(C8H8)2 | |||
Neptunocene | (Np(C8H8)2) | |||
Plutonocene | (Pu(C8H8)2) | |||
Cerocene | Ce3+(C8H81.5-)2 | 37205-27-9 | [3] |
See also
References
- ↑ Шаблон:Cite journal
- ↑ 2,0 2,1 Шаблон:Cite journal
- ↑ Marc D. Walter, Corwin H. Booth, Wayne W. Lukens, and Richard A. Andersen. Organometallics 2009, 28, 3, 698–707. Шаблон:Doi