| 释义 |
Definition of double bond in English: double bondnoun A chemical bond in which two pairs of electrons are shared between two atoms. Example sentencesExamples - This is in contrast with most electrophilic additions to carboncarbon double bonds, and with nucleophilic substitutions at saturated carbon atoms.
- In the nitro group, the central nitrogen atom is involved in both a double bond and a single bond.
- The naming of geometrical isomers reflects the position of the atoms or groups on each of the carbon atoms in the double bond.
- Fading occurs when any chemical process breaks the sequence of conjugated double bonds constituting the chromophore - the dye moiety that imparts colour.
- Ozone is a strong electrophilic reagent which can attack the double bond found in alkenes.
- Researchers have begun to exploit conjugated polymers - repeating chains of organic molecules rich in double bonds between carbon atoms - in hopes of creating LEDs that can be molded like plastic and tuned easily from one color to another.
- The central carbon atom has a double bond with the oxygen.
- The difference between the two structures is the location of the double bond relative to the single bond.
- Organic sulfates are esters and are formed by reacting an alcohol with cold sulfuric acid or by the reaction of sulfuric acid with a double bond in an alkene.
- The benzene molecule is a six-carbon ring with alternating single and double bonds between the carbon atoms.
- On activation, the silane double bonds react with the polymer matrix to create a highly crosslinked, load spreading structure.
- The porphyrin ring is unsaturated, having alternating carbon-carbon single bonds and double bonds throughout the ring.
- Fatty acids that contain double bonds between carbon atoms in their chain are termed unsaturated fatty acids.
- This free radical attacks the double bonds on other monomers creating a longer chain molecule and an additional free radical.
- Conversely, unsaturated fatty acids have one or more double bonds between carbon atoms in their chains.
- They are typified by benzene, which contains six carbon atoms and three double bonds.
- Alkyl halides are produced by adding hydrogen halides across the double bonds.
- Like other hydrocarbons with double bonds, addition reactions can occur to change the double bonds to single bonds.
- Oxidation of an aldehyde breaks the double bond within the carbonyl group to give a carboxylic acid.
- A double bond happens when two electrons are shared or exchanged in a bond.
Definition of double bond in US English: double bondnoun A chemical bond in which two pairs of electrons are shared between two atoms. Example sentencesExamples - The difference between the two structures is the location of the double bond relative to the single bond.
- The benzene molecule is a six-carbon ring with alternating single and double bonds between the carbon atoms.
- On activation, the silane double bonds react with the polymer matrix to create a highly crosslinked, load spreading structure.
- They are typified by benzene, which contains six carbon atoms and three double bonds.
- This free radical attacks the double bonds on other monomers creating a longer chain molecule and an additional free radical.
- Oxidation of an aldehyde breaks the double bond within the carbonyl group to give a carboxylic acid.
- Organic sulfates are esters and are formed by reacting an alcohol with cold sulfuric acid or by the reaction of sulfuric acid with a double bond in an alkene.
- The porphyrin ring is unsaturated, having alternating carbon-carbon single bonds and double bonds throughout the ring.
- Fatty acids that contain double bonds between carbon atoms in their chain are termed unsaturated fatty acids.
- Like other hydrocarbons with double bonds, addition reactions can occur to change the double bonds to single bonds.
- In the nitro group, the central nitrogen atom is involved in both a double bond and a single bond.
- A double bond happens when two electrons are shared or exchanged in a bond.
- Alkyl halides are produced by adding hydrogen halides across the double bonds.
- Conversely, unsaturated fatty acids have one or more double bonds between carbon atoms in their chains.
- Ozone is a strong electrophilic reagent which can attack the double bond found in alkenes.
- This is in contrast with most electrophilic additions to carboncarbon double bonds, and with nucleophilic substitutions at saturated carbon atoms.
- The naming of geometrical isomers reflects the position of the atoms or groups on each of the carbon atoms in the double bond.
- Fading occurs when any chemical process breaks the sequence of conjugated double bonds constituting the chromophore - the dye moiety that imparts colour.
- The central carbon atom has a double bond with the oxygen.
- Researchers have begun to exploit conjugated polymers - repeating chains of organic molecules rich in double bonds between carbon atoms - in hopes of creating LEDs that can be molded like plastic and tuned easily from one color to another.
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