annulene

noun

an·nu·lene ˈan-yə-ˌlēn How to pronounce annulene (audio)

plural annulenes

chemistry

: any of a class of completely conjugated cyclic hydrocarbons (such as benzene or cyclooctatetraene)

In 1991, a temperate rainforest near Puerto Montt in central Chile yielded a fungus that made annulene, a hydrocarbon that has a history going back to the first formulations of rocket fuel.

Buzzy Gordon, Americas, 1 Nov. 2007

This class of annulenes, which have few hydrogens and are considered high-energy because of their numerous triple bonds, has also drawn attention as potential precursors to new carbon allotropes.

Elizabeth Wilson, Chemical & Engineering News, 3 Mar. 1997

Note: Annulenes have the general chemical formula C_nH_n where n is an even number or C_nH_n + 1 if n is an odd number.

Word History

Etymology

Latin annulus "ring" + -ene

First Known Use

1962, in the meaning defined above

单词	annulene
释义	annulene noun an·nu·lene ˈan-yə-ˌlēn plural annulenes chemistry : any of a class of completely conjugated cyclic hydrocarbons (such as benzene or cyclooctatetraene) In 1991, a temperate rainforest near Puerto Montt in central Chile yielded a fungus that made annulene, a hydrocarbon that has a history going back to the first formulations of rocket fuel. Buzzy Gordon, Americas, 1 Nov. 2007 This class of annulenes, which have few hydrogens and are considered high-energy because of their numerous triple bonds, has also drawn attention as potential precursors to new carbon allotropes. Elizabeth Wilson, Chemical & Engineering News, 3 Mar. 1997 Note: Annulenes have the general chemical formula C_nH_n where n is an even number or C_nH_n + 1 if n is an odd number. Word History Etymology Latin annulus "ring" + -ene First Known Use 1962, in the meaning defined above
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