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In organic chemistry, two molecules are valence isomers when they are constitutional isomers that can interconvert through pericyclic reactions.〔''Rearrangements and interconversions of compounds of the formula (CH)n'' Lawrence T. Scott, Maitland. Jones Chem. Rev., 1972, 72 (2), pp 181–202 〕 ==Benzene== There are many valence isomers one can draw for the C6H6 formula benzene. Some were originally proposed for benzene itself before the actual structure of benzene was known. Others were later synthesized in lab. Some have been observed to isomerize to benzene, whereas others tend to undergo other reactions instead, or isomerize by ways other than pericyclic reactions. Image:Benzene-2D-flat.png|Benzene Image:Historic Benzene Formulae Dewar(1867) V.1.svg| Dewar benzene Image:Prisman2.svg|Prismane Image:Benzvalene.png|Benzvalene Image:Bicycloprop-2-enyl.svg|Bicyclopropenyl 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Valence isomer」の詳細全文を読む スポンサード リンク
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