| 词汇 | example_english_nitrogen-atom |
| 释义 | nitrogen atomcollocation in Englishmeanings of nitrogenand atomThese words are often used together. Click on the links below to explore the meanings. Or, see other collocations with nitrogen or atom. nitrogen noun[U] uk /ˈnaɪ.trə.dʒən/ us /ˈnaɪ.trə.dʒən/ a chemical element that is a gas with no colour or taste, forms most of the earth's atmosphere, and is a part of all ... See more at nitrogen atom noun[C] uk /ˈæt.əm/ us /ˈæt̬.əm/ the smallest unit of any chemical element, consisting of a positive nucleus surrounded by negative electrons. Atoms can combine to form ... See more at atom Examples of nitrogen atomThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. First, compounds derived from tryptamine, or from ring-hydroxy tryptamines which have been substituted at the nitrogenatom of the side chain by an alkyl group or groups. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 These molecules are unsaturated and contain a nitrogenatom in the ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, bases donating a lone pair from an oxygen atom are harder than bases donating through a nitrogenatom. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Aromatic amines have the nitrogenatom connected to an aromatic ring as in the various anilines. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In the third step, an isomerization step protonates the nitrogenatom leading to the amide. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In non-basic aromatic rings the lone pair of electrons of the nitrogenatom is delocalized and contributes to the aromatic pi electron system. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Those originate from the amino acid phenylalanine, but acquire their nitrogenatom not from the amino acid but through transamination. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The proton on the nitrogenatom can be replaced by a carbon atom of a polymer to create an ion-exchange resin, such as chelex 100. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This group, known as the cyano group, consists of a carbon atom triple-bonded to a nitrogenatom. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A nitrogenous, or nitrogen-containing, base is an organic molecule with a nitrogenatom that has the chemical properties of a base. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The aspartate residue stabilizes the positive charge on the nitrogenatom in the oxazolinium ion intermediate. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The nitrogenatom has only 5 valence electrons and is therefore considered an electrophile. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The compound can act as both an acid or a base, due to its acidic proton on the hydroxyl group and the basic nitrogenatom. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The nucleophilic addition at the nitrogenatom leads to a further deactivation of the aromatic properties and hindering of the electrophilic substitution. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The organic fragment is connected to the isocyanide group via the nitrogenatom, not via the carbon. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is derived from erythromycin, with a methyl-substituted nitrogenatom incorporated into the lactone ring, thus making the lactone ring 15-membered. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When the nitrogenatom bonds to the cobalt atom, the nitro compound is formed. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The nitrogenatom can be part of the diene or the dienophile. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This lone pair is responsible for the basicity of these nitrogenous bases, similar to the nitrogenatom in amines. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The lone pair of electrons on the nitrogenatom of pyridine is not delocalized, and thus pyridine can be protonated easily. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Want to learn more? Go to the definition of nitrogen Go to the definition of atom See other collocations with nitrogen See other collocations with atom |
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