| 单词 | carbonyl group |
| 例句 | Compounds that have a nitrogen atom bonded to one side of a carbonyl group are classified as amides. Chemistry 2019-02-14T00:00:00Z Figure 3.5 Monosaccharides are classified based on the position of their carbonyl group and the number of carbons in the backbone. Biology for AP Courses 2022-06-09T00:00:00Z However, analogues in which a methyl group is attached next to the carbonyl group were poor substrates. Catalytic machinery of enzymes expanded 2019-05-26T04:00:00Z The average value for the carboxyl group is 119.75 calories, i.e. it is equal to the sum of the thermal effects of the aldehyde and carbonyl groups. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" The resulting bond—between the carbonyl group carbon atom and the amine nitrogen atom is called a peptide link or peptide bond. Chemistry 2019-02-14T00:00:00Z In an aldehyde, the carbonyl group is bonded to at least one hydrogen atom. Chemistry 2019-02-14T00:00:00Z Other functional groups, such as the carbonyl group, have a partially negatively charged oxygen atom that may form hydrogen bonds with water molecules, again making the molecule more hydrophilic. Biology for AP Courses 2022-06-09T00:00:00Z In a ketone, the carbonyl group is bonded to two carbon atoms: Chemistry 2019-02-14T00:00:00Z By transformations of the carbonyl group, and at the same time of the hydroxyl group, many interesting types of nitrogen compounds may be correlated. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" In both aldehydes and ketones, the geometry around the carbon atom in the carbonyl group is trigonal planar; the carbon atom exhibits sp2 hybridization. Chemistry 2019-02-14T00:00:00Z We can prepare a carbonyl group by oxidation of an alcohol—for organic molecules, oxidation of a carbon atom is said to occur when a carbon-hydrogen bond is replaced by a carbon- oxygen bond. Chemistry 2019-02-14T00:00:00Z By convention, the carbon atoms in a monosaccharide are numbered from the terminal carbon closest to the carbonyl group. Biology for AP Courses 2022-06-09T00:00:00Z The unhybridized p orbital on the carbon atom in the carbonyl group overlaps a p orbital on the oxygen atom to form the π bond in the double bond. Chemistry 2019-02-14T00:00:00Z Alcohols that have their –OH groups in the middle of the chain are necessary to synthesize a ketone, which requires the carbonyl group to be bonded to two other carbon atoms: Chemistry 2019-02-14T00:00:00Z Both carboxylic acids and esters contain a carbonyl group with a second oxygen atom bonded to the carbon atom in the carbonyl group by a single bond. Chemistry 2019-02-14T00:00:00Z Amides are molecules that contain nitrogen atoms connected to the carbon atom of a carbonyl group. Chemistry 2019-02-14T00:00:00Z In the α-helix structure, the hydrogen bonds form between the oxygen atom in the carbonyl group in one amino acid and another amino acid that is four amino acids farther along the chain. Biology for AP Courses 2022-06-09T00:00:00Z |
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