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%ما هو (من)٪ 1 - تعريف
HYDROCARBON THAT CONTAINS TWO CARBON–CARBON DOUBLE BONDS
Alkadiene; Diolefin; Alkadienes; Conjugated diene; Heterodiene; Cumulated double bond; Diolefine; Diolefines
![1,3-butadiene]]](https://commons.wikimedia.org/wiki/Special:FilePath/1,3-butadiene.svg?width=200 "1,3-butadiene]]")
![Some dienes: '''A''': 1,2-Propadiene, also known as [[allene]], is the simplest cumulated diene. '''B''': [[Isoprene]], also known as 2-methyl-1,3-butadiene, the precursor to natural rubber. '''C''': [[1,3-Butadiene]], a precursor to synthetic polymers. '''D''': [[1,5-Cyclooctadiene]], an unconjugated diene (notice that each double bond is two carbons away from the other). '''E''': [[Norbornadiene]], a strained bicyclic and unconjugated diene. '''F''': [[Dicyclopentadiene]].](https://commons.wikimedia.org/wiki/Special:FilePath/Dienes various examples.png?width=200 "Some dienes: '''A''': 1,2-Propadiene, also known as [[allene]], is the simplest cumulated diene. '''B''': [[Isoprene]], also known as 2-methyl-1,3-butadiene, the precursor to natural rubber. '''C''': [[1,3-Butadiene]], a precursor to synthetic polymers. '''D''': [[1,5-Cyclooctadiene]], an unconjugated diene (notice that each double bond is two carbons away from the other). '''E''': [[Norbornadiene]], a strained bicyclic and unconjugated diene. '''F''': [[Dicyclopentadiene]].")
cumulated
adjective Chemistry denoting two double bonds attached to the same carbon atom.
Cumulated
·Impf & ·p.p. of Cumulate.
Cumulation
·noun The act of heaping together; a heap. ·see Accumulation.
ويكيبيديا
Diene
In organic chemistry a diene ( DY-een) (diolefin ( dy-OH-lə-fin) or alkadiene) is a covalent compound that contains two double bonds, usually among carbon atoms. They thus contain two alkene units, with the standard prefix di of systematic nomenclature. As a subunit of more complex molecules, dienes occur in naturally occurring and synthetic chemicals and are used in organic synthesis. Conjugated dienes are widely used as monomers in the polymer industry. Polyunsaturated fats are of interest to nutrition.
أمثلة من مجموعة نصية لـ٪ 1
1. MOFCOM also found that producers from Thailand, South Korea and Taiwan were dumping, and that cumulated subject imports were causing material injury to the Chinese industry.
2. "During the rest of the day and early evening we frantically tried to persuade Porto to agree to a deal and this cumulated in a club record 'million euro bid (6.15million) being offered.
3. The electoral commission will today confirm that the Conservatives‘ deficit rose by 6.2m in 2004 – taking the cumulated deficit over 12m – and suggesting that the 2005 figures, when they emerge, will show the figures rose sharply again during the May 5 campaign.