cis-Cyclooctene

*cis*-Cyclooctene
Names
	Preferred IUPAC name (Z)-Cyclooctene
	Other names cis-Cyclooctene
Identifiers
CAS Number	931-87-3;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:229204;
ChemSpider	553642;
ECHA InfoCard	100.012.040
EC Number	213-243-4;
PubChem CID	638079;
UNII	AE340T3540;
CompTox Dashboard (EPA)	DTXSID20883615 ;
	InChI InChI=1S/C8H14/c1-2-4-6-8-7-5-3-1/h1-2H,3-8H2/b2-1- Key: URYYVOIYTNXXBN-UPHRSURJSA-N; InChI=1/C8H14/c1-2-4-6-8-7-5-3-1/h1-2H,3-8H2/b2-1- Key: URYYVOIYTNXXBN-UPHRSURJBT;
	SMILES C\1=C\CCCCCC/1;
Properties
Chemical formula	C8H14
Molar mass	110.200 g·mol−1
Density	0.846 g/mL
Melting point	−16 °C (3 °F; 257 K)
Boiling point	145 to 146 °C (293 to 295 °F; 418 to 419 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H226, H304
Precautionary statements	P210, P233, P240, P241, P242, P243, P280, P301+P310, P303+P361+P353, P331, P370+P378, P403+P235, P405, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

cis-Cyclooctene is a cycloalkene with the formula (CH₂)₆(CH)₂. It is a colorless liquid that is used industrially to produce a polymer. It is also a ligand in organometallic chemistry.

Cyclooctene is the smallest cycloalkene that can be isolated as both the cis- and trans-isomer. cis-Cyclooctene is shaped like the 8-carbon equivalent chair conformation of cyclohexane.


cis-Cyclooctene in chair conformation	(R_p)-trans-Cyclooctene in crown conformation

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