Explore Alkenes through 10+ example sentences from English, with an explanation of the meaning. Ideal for language learners, writers and word enthusiasts.
Alkenes meaning
plural of alkene
Using Alkenes
- The main meaning on this page is: plural of alkene
- In the example corpus, alkenes often appears in combinations such as: alkenes are, of alkenes, alkenes which.
Context around Alkenes
- Average sentence length in these examples: 20.8 words
- Position in the sentence: 8 start, 6 middle, 6 end
- Sentence types: 20 statements, 0 questions, 0 exclamations
Corpus analysis for Alkenes
- In this selection, "alkenes" usually appears near the start of the sentence. The average example has 20.8 words, and this corpus slice is mostly made up of statements.
- Around the word, olefins, linear, higher, bound, normally and serve stand out and add context to how "alkenes" is used.
- Recognizable usage signals include alkenes bound to and alkenes serve as. That gives this page its own corpus information beyond isolated example sentences.
- By corpus frequency, "alkenes" sits close to words such as abattoirs, abike and ablative, which helps place it inside the broader word index.
Example types with alkenes
The same corpus examples are grouped by length and sentence type, making it easier to see the contexts in which the word appears:
Some fatty acids are produced synthetically by hydrocarboxylation of alkenes. (10 words)
Preparation of epoxides main Epoxides are typically prepared by oxidation of alkenes. (12 words)
These catalysts polymerize propylene and other 1-alkenes to highly crystalline isotactic polymers. (13 words)
Thus, trans alkenes, which are less polar and more symmetrical, have lower boiling points and higher melting points, and cis alkenes, which are generally more polar and less symmetrical, have higher boiling points and lower melting points. (37 words)
For bridged alkenes, Bredt's rule states that a double bond cannot occur at the bridgehead of a bridged ring system unless the rings are large enough (8 or more atoms). (31 words)
All modern supported Ziegler–Natta catalysts designed for polymerization of propylene and higher 1-alkenes are prepared with TiCl 4 as the active ingredient and MgCl 2 as a support. (30 words)
Example sentences (20)
Alkenes bound to metal cations are reactive toward nucleophiles whereas alkenes normally are not.
Linear alkenes of approximately five to sixteen carbons are liquids, and higher alkenes are waxy solids.
Thus, trans alkenes, which are less polar and more symmetrical, have lower boiling points and higher melting points, and cis alkenes, which are generally more polar and less symmetrical, have higher boiling points and lower melting points.
Alkenes serve as a feedstock for the petrochemical industry because they can participate in a wide variety of reactions, prominently polymerization and alkylation.
All modern supported Ziegler–Natta catalysts designed for polymerization of propylene and higher 1-alkenes are prepared with TiCl 4 as the active ingredient and MgCl 2 as a support.
Double bonds: E/Z main For alkenes and similar double bonded molecules, the same prioritizing process is followed for the substituents.
For bridged alkenes, Bredt's rule states that a double bond cannot occur at the bridgehead of a bridged ring system unless the rings are large enough (8 or more atoms).
For example, some alkenes are toxicated by human enzymes to produce an electrophilic epoxide.
Hydration reactions Low molecular weight alcohols of industrial importance are produced by the addition of water to alkenes.
Hydrolysis Alkenes engage in an acid catalysed hydration reaction using concentrated sulfuric acid as a catalyst that gives usually secondary or tertiary alcohols.
It is a mixture of paraffins ( alkanes ), cycloalkanes (naphthenes), and olefins ( alkenes ), where the usage of the terms paraffin and olefin is particular to the oil industry.
It is low in aromatics (depending on the grade of crude oil ), containing some cycloalkanes (naphthenes) and no olefins ( alkenes ).
More complex alkenes may be named with the E–Z notation for molecules with three or four different substituents (side groups).
Naming substituted hex-1-enes Cis–trans notation main In the specific case of disubstituted alkenes where the two carbons have one substituent each, cis–trans notation may be used.
Preparation of epoxides main Epoxides are typically prepared by oxidation of alkenes.
Some fatty acids are produced synthetically by hydrocarboxylation of alkenes.
The aqueous bromine is shaken with the unknown substance and will decolorize if alkenes are present.
The compound 5-bromouracil is thus an artificial mutagen. citation * Aqueous bromine can be used to test for the presence of alkenes.
These catalysts polymerize propylene and other 1-alkenes to highly crystalline isotactic polymers.
These harmful deposits arise from the oxidation of alkenes and other minor components in gasoline (see drying oils ).
Common combinations with alkenes
These word pairs occur most frequently in English texts: