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Sigma-Aldrich

Cyclooctatetraene

98%

Synonyme(s) :

[8]Annulene

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About This Item

Formule empirique (notation de Hill):
C8H8
Numéro CAS:
Poids moléculaire :
104.15
Numéro Beilstein :
2496800
Numéro MDL:
Code UNSPSC :
12352103
ID de substance PubChem :
Nomenclature NACRES :
NA.23

Pureté

98%

Forme

liquid

Contient

0.1% hydroquinone as inhibitor

Indice de réfraction

n20/D 1.537 (lit.)

Point d'ébullition

142-143 °C (lit.)

Pf

−5-−3 °C (lit.)

Densité

0.925 g/mL at 25 °C (lit.)

Température de stockage

−20°C

Chaîne SMILES 

C1=CC=CC=CC=C1

InChI

1S/C8H8/c1-2-4-6-8-7-5-3-1/h1-8H/b2-1-,3-1-,4-2-,5-3-,6-4-,7-5-,8-6-,8-7-

Clé InChI

KDUIUFJBNGTBMD-BONZMOEMSA-N

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Description générale

Cyclooctatetraene (COT) is a nonaromatic 4n π-conjugated system with a non-planar tub-shaped geometry and potential energy surfaces at the ground state.
Cyclooctatetraene is an 8p electron system and has a triplet ground state if the p electrons are delocalized. It is antiaromatic hence highly unstable and reactive. It adopts a non-planar boat conformation to attain stability with alternating single and double bonds and hence behaves like a polyolefin.

Application

  • Used in the synthesis of highly organic film for silicon surfaces to improve its chemical and physical properties.
  • Used in liquid state organic dye lasers.
  • Used as triplet state quencher to reduce dye blinking.
COT may be functionalized by two side groups which can be used as active anode materials for rechargeable batteries. High capacity and voltage organic cathodes may be developed by using COT that can be fused with carbon molecules.

Pictogrammes

FlameHealth hazardExclamation mark

Mention d'avertissement

Danger

Classification des risques

Aquatic Chronic 3 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 3

Organes cibles

Respiratory system

Code de la classe de stockage

3 - Flammable liquids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

71.6 °F - closed cup

Point d'éclair (°C)

22 °C - closed cup

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter


Certificats d'analyse (COA)

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Consulter la Bibliothèque de documents

Tyson E Graber et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 37(38), 9116-9131 (2017-08-20)
Neuronal mRNAs can be packaged in reversibly stalled polysome granules before their transport to distant synaptic locales. Stimulation of synaptic metabotropic glutamate receptors (mGluRs) reactivates translation of these particular mRNAs to produce plasticity-related protein; a phenomenon exhibited during mGluR-mediated LTD.
Erika A Riederer et al.
eLife, 7 (2018-06-12)
Membrane proteins such as ion channels and transporters are frequently homomeric. The homomeric nature raises important questions regarding coupling between subunits and complicates the application of techniques such as FRET or DEER spectroscopy. These challenges can be overcome if the
Structure and bonding of ordered organic monolayers of 1, 3, 5, 7-cyclooctatetraene on the Si (001) surface: Surface cycloaddition chemistry of an antiaromatic molecule
Hovis, Jennifer S., and Robert J. Hamers
The Journal of Physical Chemistry B, 102(4), 687-692 (1998)
Lauryn E Sass et al.
Biochemistry, 49(14), 3174-3190 (2010-02-26)
The first step in DNA mismatch repair (MMR) is the recognition of DNA mismatches or nucleotide insertions/deletions (IDLs) by MutS and MutS homologues. To investigate the conformational properties of MutS-mismatch complexes, we used single-molecule fluorescence resonance energy transfer (smFRET) to
Aromaticity and antiaromaticity in the low-lying electronic states of cyclooctatetraene.
Karadakov PB.
The Journal of Physical Chemistry A, 112(49), 12707-12713 (2008)

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