Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
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 −1/4. 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.
^Jug, Karl (November 1984). "Aromaticity in unusual heteropolar monocyclic rings with (4n + 2) π electrons". The Journal of Organic Chemistry. 49 (23): 4475–4478. doi:10.1021/jo00197a029.
and 14 Related for: Cyclooctatetraenide anion information
In chemistry, the cyclooctatetraenideanion or cyclooctatetraenide, more precisely cyclooctatetraenediide, is an aromatic species with a formula of [C8H8]2−...
olefin polymerization. Some metallocenes consist of metal plus two cyclooctatetraenideanions (C 8H2− 8, abbreviated cot2−), namely the lanthanocenes and the...
(COT)2U, which has an atom of uranium sandwiched between two cyclooctatetraenideanions (D8h molecular symmetry). The uranium f orbitals interact substantially...
ligands such as the cyclopentadienide ion [C5H5]−, alkenes and the cyclooctatetraenide ion [C8H8]2−, the number of adjacent atoms in the π-electron system...
organoplutonium compound composed of a plutonium atom sandwiched between two cyclooctatetraenide (COT2-) rings. It is a dark red, very air-sensitive solid that is...
americium, and also expected for curium), thorium forms the yellow cyclooctatetraenide complex Th(C 8H 8) 2, thorocene. It is isotypic with the more well-known...
(up to americium, and also expected for curium), thorium forms a cyclooctatetraenide complex: the yellow Th(C8H8)2, thorocene. It is isotypic with the...
samarium cyclopentadienides can be replaced by the indenide (C9H7)− or cyclooctatetraenide (C8H8)2− ring, resulting in Sm(C9H7)3 or KSm(η(8)−C8H8)2. The latter...
cyclooctatetraene in tetrahydrofuran to give alkali metal cyclooctatetraenides; for example, dipotassium cyclooctatetraenide (K2C8H8) is an important precursor to many...
americium, and also expected for curium), thorium forms the yellow cyclooctatetraenide complex Th(C 8H 8) 2, thorocene. It is isotypic with the more well-known...
the formation of the three membered ring. By reacting dilithium cyclooctatetraenide with 2,4,6-tri-t-butylphenylphosphonous dichloride, the following...
reducing it with aluminium powder before reacting it with potassium cyclooctatetraenide. Pa 2 O 5 + SOCl 2 → 400 C PaCl 5 {\displaystyle {\ce {Pa2O5 + SOCl2...
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