conjugated double bond

conjugated double bond

n.
Two double bonds in a compound that are separated by a single bond.
References in periodicals archive ?
This can be explained by the higher reactivity of allyl ether functionality and conjugated double bond for autoxidation.
CLA is a collective term for geometric and positional isomers of linoleic acid, and all these isomers have a conjugated double bond instead of the methylene-separation (Schmid et al.
The ability of carotenoids to quench singlet oxygen has been linked to the conjugated double bond system, the maximum efficiency being shown by carotenoids with nine or more conjugated double bonds (Foote et al.
It can be prepared by a process comprising the following steps: alcoholyzing a drying oil with a polyol; adding successively, to the product from the first step, a dibasic anhydride, an unsaturated fatty acid containing a conjugated double bond and an epoxy resin, and esterifying to obtain an epoxy polyester; and copolymerizing the epoxy polyester and an acrylic monomer.
The conjugated double bonds and N, O, S atoms in the organic molecules help to form p-d bonds between the inhibitor and metal resulting from overlap of p-electrons to the 3d vacant orbital of metal atoms, which can enhance the adsorption of the inhibitors on the metal surface [10].
Some of the earliest commercial anodic ED coatings were automotive primers based on natural oils with conjugated double bonds (such as dehydrated castor oil and linseed oil) that were reacted with maleic anhydride.
Although lutein and zeaxanthin have the same number of double bonds, zeaxanthin has 11 conjugated double bonds but lutein's eleventh double bond forms a more chemically reactive allylic hydroxyl end group.
Similar oxygen-pressure-dependent behavior may be shown by other compounds containing many conjugated double bonds.
The values of the determiant of the distance matrixes of the polyenes (I) increase with the number of conjugated double bonds.
For tung oil, with mostly conjugated double bonds from eleostearic acid (~ 77-82 percent eleostearic acid), the rate of autoxidation is much higher than that observed in linolenic acid, due to the conjugation.
The compounds' long tails contain conjugated double bonds that protect green plants' cellular components from harmful byproducts of oxygen production during photosynthesis.