double bond

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dou·ble bond

a covalent bond resulting from the sharing of two pairs of electrons, for example, H2C=CH2 (ethylene).

dou·ble bond

(dŭb'ĕl bond)
A covalent bond resulting from the sharing of two pairs of electrons.

double bond,

n a covalent bond in which two valence (outer) electrons are contributed by each participating atom. See also covalent bond.
References in periodicals archive ?
The peaks used for quantification of the silane incorporation and terminal double bond formation are indicated with circles.
To investigate the reactivity of the double bond in the AF material and the possibility of interaction with the peroxide molecules C-NMR analysis was performed.
The experimental nitrogen-oxygen bond lengths are between the typical N-O single and double bond lengths.
The length of the C-N and terminal C-S bonds are intermediate between the values expected for single and double bonds, indicating that the canonical form II makes a substantial contribution of the structure.
Nevertheless, and even granting that Angier's work is not simply a chronicle but a "psycho-biography," The Double Bond is a very snoopy book.
Finally, and most obviously, Angier takes the notion of the double bond from the title of Levi's unpublished last manuscript, and elevates it to the status of the driving force behind his life story.
For example, if the double bond nearest the methyl end of the molecule is three carbons from the methyl end, the fatty acid is known as an omega-3 or n-3 fatty acid.
The higher the electron density at the double bond, the higher the sensitivity against ozone.
Double Bond Chemical, a manufacturer of photoinitiators and oligomers recently increased its annual output in photoinitiator production, from 4,500 tons to 9,000 tons, and its annual output in oligomers production increased to 10,000 tons.
Double Bond Wine will be presented along side elegant couture wine glass from Devine Decor.
Previously reported measurements of double bond conversion obtained from volume shrinkage measurements of 1- and 2-mm thick samples performed under continuous irradiation with an intensity of 5 mW/[cm.