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单词 ring isomerism
释义 ring isomerism
[`riŋ ī`säm·ǝ´riz·ǝm]
ORGANIC CHEMISTRY
A type of geometrical isomerism in which bond lengths and bond angles prevent the existence of the trans structure if substituents are attached to alkenic carbons which are part of a cyclic system, the ring of which contains fewer than eight members; for example, 1,2- dichlorocyclohexene.
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