What is Alkyne?
An '''alkyne''' is a [[molecule]] that has a [[triple bond]] between two [[carbon]] atoms. They have general formula C<sub>n</sub>H<sub>2n-2</sub>. They are also called acetylenes. The smallest alkyne is [[acetylene]], also called ethyne. Alkynes are [[hydrophobic]]: this means they dissolve well in organic [[solvent]]s but not in [[water]]. Alkynes are more reactive than usual [[hydrocarbon]]s. For example, they are more reactive than [[alkene]]s in many reactions. If the alkyne is at the end of a molecule, it is easy to remove the [[proton]] with a strong [[base (chemistry)|base]]. Then, the alkyne can be used in [[addition reaction]]s. For example, it can be added to a [[ketone]]. Alkynes are also easy to [[redox|reduce]] to [[double bond]]s. They can be made into both ''trans'' and ''cis'' double bonds. Alkynes are also used a lot in [[pericyclic reaction]]s. == Structure == Alkynes have a 180 [[degree (angle)|degrees angle]] between the two carbon atoms. For this reason, they do not like to be in a [[cyclic compound]]. Some examples of alkynes are shown below. [[File:Alkyne General Formulae V.2.png|thumb|center|500px|Examples of alkynes]] Here is the list of the the first 10 Alkynes: # Ethyne C<sub>2</sub>H<sub>2</sub> # Propyne C<sub>3</sub>H<sub>4</sub> # Butyne C<sub>4</sub>H<sub>6</sub> # Pentyne C<sub>5</sub>H<sub>8</sub> # Hexyne C<sub>6</sub>H<sub>10</sub> # Heptyne C<sub>7</sub>H<sub>12</sub> # Octyne C<sub>8</sub>H<sub>14</sub> # Nonyne C<sub>9</sub>H<sub>16</sub> # Decyne C<sub>10</sub>H<sub>18</sub> == References == {{reflist}} [[Category:Hydrocarbons]] [[Category:Functional groups]] {{chem-stub}} {{functional group}} {{Alkynes}}