Resonance: Difference between revisions
No edit summary |
Good edit. I corrected a typo. |
||
| (One intermediate revision by one other user not shown) | |||
| Line 1: | Line 1: | ||
Resonance is the | Resonance is the deloca<span style="font-size: 13.28px;">lisation of </span>[[Electrons|electrons]]<span style="font-size: 13.28px;"> </span><span style="font-size: 13.28px;">across a </span>[[Double bond|double bond]]<span style="font-size: 13.28px;"> and a single bond. In stuctures such as cyclic alkenes, e.g. </span>[[Benzene|benzene]]<span style="font-size: 13.28px;">, the increased stability of the [[molecules|molecule]] is explained by resonance. The electrons move from the double bond where there is a large negative charge due to the higher concentration of [[Electrons|electrons]] to the single bond where there is a smaller negative charge as there are fewer [[Electrons|electrons]]. As a result the single bond has now became a double bond and the double bond has became a single bond. The electrons then move in reverse for the same reason and the bonds switch around again. The movement is so quick that a benzene ring, for example, could be described as having 6 'one and a half bonds' rather than locked in electrons to form 3 single bonds and 3 double bonds.</span> | ||
[[Image:Wow.png|Resonance structure of benzene]]<span style="font-size: 13.28px;">Resonance structure of benz</span><span style="font-size: 13.28px;">ene.</span><ref name="Resonance structure of benzene">Wikipedia. Resonance (Chemistry). Last modified 26/11/2016 [cited 5/12/16]fckLRAvailable from: https://en.wikipedia.org/wiki/Resonance_(chemistry)</ref> | [[Image:Wow.png|Resonance structure of benzene]]<span style="font-size: 13.28px;">Resonance structure of benz</span><span style="font-size: 13.28px;">ene.</span><ref name="Resonance structure of benzene">Wikipedia. Resonance (Chemistry). Last modified 26/11/2016 [cited 5/12/16]fckLRAvailable from: https://en.wikipedia.org/wiki/Resonance_(chemistry)</ref> | ||
=== References === | === References === | ||
<references /> | <references /> | ||
Latest revision as of 20:57, 6 December 2016
Resonance is the delocalisation of electrons across a double bond and a single bond. In stuctures such as cyclic alkenes, e.g. benzene, the increased stability of the molecule is explained by resonance. The electrons move from the double bond where there is a large negative charge due to the higher concentration of electrons to the single bond where there is a smaller negative charge as there are fewer electrons. As a result the single bond has now became a double bond and the double bond has became a single bond. The electrons then move in reverse for the same reason and the bonds switch around again. The movement is so quick that a benzene ring, for example, could be described as having 6 'one and a half bonds' rather than locked in electrons to form 3 single bonds and 3 double bonds.
Resonance structure of benzene.[1]
References
- ↑ Wikipedia. Resonance (Chemistry). Last modified 26/11/2016 [cited 5/12/16]fckLRAvailable from: https://en.wikipedia.org/wiki/Resonance_(chemistry)