Editing Cyclopropene (section)

{{Short description|Organic ring compound (C3H4)}}
{{Chembox
|Verifiedfields = changed
|Watchedfields = changed
|verifiedrevid = 442026875
|ImageFile1 = Cyclopropene 2D skeletal.svg
|ImageSize1 = 100
|ImageName1 = Skeletal formula of cyclopropene
|ImageFileL2 = Cyclopropene.png
|ImageNameL2 = Skeletal formula of cyclopropene with implicit hydrogens shown
|ImageFileR2 = Cyclopropene-3D-balls.png
|ImageNameR2 = Ball and stick model of cyclopropene
|PIN = Cyclopropene<ref>{{Cite web|title = cyclopropene - Compound Summary|url = https://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=123173&loc=ec_rcs|work = PubChem Compound|publisher = National Center for Biotechnology Information|accessdate = 9 October 2011|location = USA|date = 27 March 2005|at = Identification and Related Records}}</ref>
|Section1={{Chembox Identifiers
|CASNo_Ref = {{cascite|correct|CAS}}
|CASNo = 2781-85-3
|UNII_Ref = {{fdacite|correct|FDA}}
|UNII = 7B8994OHJ0
|PubChem = 123173
|ChemSpiderID = 109788
|ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}}
|MeSHName = cyclopropene
|SMILES = C1C=C1
|StdInChI = 1S/C3H4/c1-2-3-1/h1-2H,3H2
|StdInChI_Ref = {{stdinchicite|changed|chemspider}}
|StdInChIKey = OOXWYYGXTJLWHA-UHFFFAOYSA-N
|StdInChIKey_Ref = {{stdinchicite|changed|chemspider}}
}}
|Section2={{Chembox Properties
|C=3 | H=4 
|BoilingPtC = -36
}}
|Section3={{Chembox Thermochemistry
|DeltaHc = −2032 – −2026 kJ mol<sup>−1</sup>
|HeatCapacity = 51.9–53.9 J K<sup>−1</sup> mol<sup>−1</sup>
}}
}}

'''Cyclopropene''' is an [[organic compound]] with the [[chemical formula|formula]] {{chem2|C3H4}}. It is the simplest [[cycloalkene]]. Because the ring is highly [[Ring strain|strained]], cyclopropene is difficult to prepare and highly reactive.  This colorless gas has been the subject for many fundamental studies of bonding and reactivity.<ref>{{cite journal |author= Carter, F. L. |author2= Frampton, V. L. |title= Review of the Chemistry of Cyclopropene Compounds |journal= Chemical Reviews |year= 1964 |volume= 64 |issue= 5 |pages= 497–525 |doi= 10.1021/cr60231a001}}</ref>  It does not occur naturally, but derivatives are known in some [[fatty acid]]s.  Derivatives of cyclopropene are used commercially to control ripening of some fruit.