Cyclopentadienyl anion

Cyclopentadienyl anion
Names
IUPAC name
Cyclopentadienide
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/C5H5/c1-2-4-5-3-1/h1-5H/q-1
    Key: SINKOGOPEQSHQD-UHFFFAOYSA-N
  • InChI=1/C5H5/c1-2-4-5-3-1/h1-5H/q-1
    Key: SINKOGOPEQSHQD-UHFFFAOYAD
  • [cH-]1cccc1
Properties
[C
5
H
5
]
or Cp
Molar mass 65.09 g/mol
Conjugate acid Cyclopentadiene
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

In chemistry, the cyclopentadienyl anion or cyclopentadienide is an aromatic species with a formula of [C
5
H
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]

  1. ^ "Cyclopentadienide". PubChem Compound Database. National Center for Biotechnology Information. Retrieved 14 April 2016.
  2. ^ 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