Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound
In chemistry, the cyclopentadienyl anion or cyclopentadienide is an aromatic species with a formula of [C 5H 5]− and abbreviated as Cp−.[1] It is formed by the deprotonation of cyclopentadiene. The cyclopentadienyl anion is a ligand which binds to a metal in organometallic chemistry.[2]
^"Cyclopentadienide". PubChem Compound Database. National Center for Biotechnology Information. Retrieved 14 April 2016.
^Smith, Michael B.; March, Jerry (2007), Advanced Organic Chemistry: Reactions, Mechanisms, and Structure (6th ed.), New York: Wiley-Interscience, p. 66, ISBN 978-0-471-72091-1
and 27 Related for: Cyclopentadienyl anion information
In chemistry, the cyclopentadienylanion or cyclopentadienide is an aromatic species with a formula of [C 5H 5]− and abbreviated as Cp−. It is formed by...
with the formula C5H6. It is often abbreviated CpH because the cyclopentadienylanion is abbreviated Cp−. This colorless liquid has a strong and unpleasant...
chemistry, cyclopentadienyl is a radical with the formula C5H5. The related cyclopentadienylanion (which can formally be converted to the cyclopentadienyl radical...
A metallocene is a compound typically consisting of two cyclopentadienylanions (C 5H− 5, abbreviated Cp) bound to a metal center (M) in the oxidation...
rhodocenes, all of which are unstable. The original synthesis used a cyclopentadienylanion and tris(acetylacetonato)rhodium(III); numerous other approaches...
organometallic compounds, such as the ferrocene [Fe(C2H5)2], where two cyclopentadienylanions are bound to the FeII centre. All known forms of life require iron...
is the heteroaromatic anion with the formula [C5H5BH]−. Derivatives of boratabenzene are ligands akin to cyclopentadienylanion. sandwich or half-sandwich...
the hydrogen atoms (something which does not happen in the planar cyclopentadienylanion C5H−5 because it doesn't have as many hydrogen atoms). This means...
the formula Fe(C5H5)2. The molecule is a complex consisting of two cyclopentadienyl rings sandwiching a central iron atom. It is an orange solid with a...
oxidation state of 0 in one structure and −1 in the other. For the cyclopentadienylanion C 5H− 5, the oxidation state of C is −1 + −1/5 = −6/5. The −1 occurs...
found in ions as well: the cyclopropenyl cation (2e system), the cyclopentadienylanion (6e system), the tropylium ion (6e), and the cyclooctatetraene dianion...
pentadienyl anion. An even greater effect is seen if the anion is aromatic, for example, deprotonation of cyclopentadiene to give the cyclopentadienylanion. Dienes...
-um. Examples are tropylium and triphenylmethyl cations and the cyclopentadienylanion. Haloalkanes are a class of molecule that is defined by a carbon–halogen...
structure can serve as a ligand with various metals. Tropylium ion Cyclopentadienylanion Jug, Karl (November 1984). "Aromaticity in unusual heteropolar monocyclic...
ortho-carborane. These dianions function as ligands, related to the cyclopentadienylanion. Substituted dicarbollides are also known such as [C2B9H10(pyridine)]−...
explained by regarding azulene as the fusion of a 6 π-electron cyclopentadienylanion and a 6 π-electron tropylium cation: one electron from the seven-membered...
chemistry, the pentadienyl anion is a ligand, the acyclic analogue of the more-common cyclopentadienylanion. The pentadienyl anion is generated by deprotonation...
aromatic cyclopentadienyl aromatic anion. Contrary to the π-type all in-phase orbital overlap exhibited by the organic cyclopentadienylanion, σ-type bonding...
methylcyclopentadienyl anion. This ion is useful as a ligand for organometallic complexes. Relative to the corresponding cyclopentadienyl (Cp) complexes, complexes...
then with triethylamine hydrolyzes the ether group. Aryl radical Cyclopentadienylanion Meisenheimer complex, the analogous intermediate in nucleophilic...
cyclopentadienide is also used for the preparation of substituted cyclopentadienyl derivatives such as the ester and formyl derivatives: NaC5H5 + O=C(OEt)2...
Examples of antiaromatic compounds are pentalene (A), biphenylene (B), cyclopentadienyl cation (C). The prototypical example of antiaromaticity, cyclobutadiene...
has a formal +2 charge, and the Cp rings are usually assigned as cyclopentadienylanions (Cp−), related to cyclopentadiene by deprotonation. The structure...
at 6.5 ppm and two methylene bridge protons at 3 ppm whereas the cyclopentadienylanion has a single resonance at 5.50 ppm. The use of 6Li and 7Li NMR has...
Global Information
