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five-membered

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Adj.1.five-membered - of a chemical compound having a ring with five membersfive-membered - of a chemical compound having a ring with five members
membered - having members; normally used in chemistry in combination with a number


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The basic framework of an N-heterocyclic carbene is a five-membered ring made of two nitrogen and three carbon atoms.
The difference in chemical shifts of the methylene protons before and after reaction was attributed to the geometrical effects of the five-membered ring formed from H-bonding.
Interesting candidates include derivatives of tetrazoles, five-membered rings made of four nitrogen and one carbon atom, as well as tetrazines, six-membered rings made of four nitrogen and two carbon atoms.
 
 
 
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