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 ?
To transform vegetable oils into solid or semi-solid substances, producers change some double bonds into single bonds.
The experimental results of silane incorporation and terminal double bond (vinyl) formation are depicted in Figures 3 and 4.
Elastomers, especially those with residual double bonds, show various kinds of aging due to environmental influences:
The saturation of the double bond during bromination reaction causes the appearance of new peaks at 1.
The positions of the hydroxyl moieties and the double bonds in the molecule were assigned by coupling constants, 1H-1H COSY and HMBC correlations.
Equation (1)--Determination of residual double bonds at time=0 ([A.
1] in the GMO spectra is related to the double bond [14].
CFA contains 48 wt% of compounds with two conjugated double bonds (conjugated linoleic acids, CLA), 27% with one double bond (oleic acid) and 11% with two non-conjugated double bonds (linoleic acid).
C2-C3 double bond and 3'4'-OH group might not be important for antiplatelet aggregation: Rutin isoquercitrin and hesperetin showed similar inhibiting affinities on ADP-induced platelet aggregation with inhibitory rates of 55.
12-15) Because FTIR measurements of DC use the aromatic carbon-carbon double bond peak as internal standard, variations in comonomer blend composition and ratio can influence the results.
SeeNews) - Sep 18, 2013 - Belgian brewer AB InBev (EBR:ABI) announced Tuesday a double bond issue, one in euro and one in British pounds, that is planned for September 24.