| 词汇 | example_english_covalent-bond |
| 释义 | Examples of covalent bondThese 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. This structure is unique in enzymes in that the two ends are the only form of covalentbond attachment to rest of the protein. Thereafter, b-ionone freely exchanged within the binding pocket during perfusion because the truncated retinoid cannot form a covalentbond with opsin. The mechanism of the attractive force in a covalentbond relies on highly complex electromagnetic interactions between electrons with magnetic spin components. This is of course equivalent to saying that as a covalentbond begins to form between the phosphorus and the 2h-oxygen, the burden of the negative charge becomes relieved. This type of chemical bond is either a non-polar covalentbond or a polar covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As such, the chemical linkage (usually a covalentbond) should be subjectable to biodegradation, such as hydrolysis, by an enzymatic or non-enzymatic mechanism. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. What makes the isopeptag different from other peptide tags is that it can bind its binding protein through a permanent and irreversible covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. If the unpaired electrons can spin-pair to form a covalentbond, then the covalent bonding interaction can lower the energy of the charge transfer state. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They are not full charges because the electrons are still shared through a covalentbond between the oxygen and carbon. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. While traditional chemistry focuses on the covalentbond, supramolecular chemistry examines the weaker and reversible noncovalent interactions between molecules. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This new peptide tag can allow scientists to target and isolate their proteins of interest through a permanent covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These products incorporate a unique synthetic bioadhesive that forms a covalentbond with tissue proteins enabling adhesion to internal organs and achieving a sealing effect. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Photochemical routes to oxyallyl cations generally result in the formation of a new covalentbond before the cycloaddition itself takes place. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Secondly, since there is no covalentbond, various indicators can be used with the same receptor. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. To uncage molecules, a photolysis system is required to cleave the covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Therefore, a single bond is a type of covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The chloromethyl group reacts with the active site cysteine to form a covalentbond with the loss of the chlorine. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Each oxygen atom is bonded to the silicon by a single covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. To determine the polarity of a covalentbond using numerical means, the difference between the electronegativity of the atoms is taken. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When both electrons come from one of the atoms it was called a dative covalentbond or coordinate bond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There is another opportunity for ununseptium to complete the octetto form a covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The association is strongest as a covalentbond and weakest when the pair exists as free ions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The effective bond order is 0.5, so its strength is comparable to a covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Each hydrogen atom forms a partial covalentbond with two atoms rather than one. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Two of them make a quasi covalentbond and one remains unpaired. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This results in the establishment of a covalentbond between the carbon-6 atom of the cytosine ring and the enzyme. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. If there were a covalentbond between the copper ions, the electrons would pair up and the compound would be diamagnetic. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Besides the single bond, a covalentbond can be either a double bond or a triple bond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A covalentbond is the chemical bond which involves the sharing of pairs of electrons between atoms. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, for each consecutive covalentbond that is broken or formed, the nitrogen rule again reverses. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In all cases the bond is a covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This type of bonding differs from the usual covalentbond, which involves two atoms sharing two electrons (2c-2e bonding). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. At lower pressures however the bonding becomes entirely localized into a regular covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The covalentbond must, at a later stage in the reaction, be broken to regenerate the enzyme. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In addition to the compounds where a noble gas atom is involved in a covalentbond, noble gases also form non-covalent compounds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This allows for the development of the polymer layer, which forms a covalentbond with the products surface, making it extremely durable. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. To achieve this, two oxygen atoms form a double covalentbond with carbon. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The presence of a strong triple covalentbond in the molecule renders it unreactive under normal circumstances. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This covalentbond is strong, meaning the lipase inhibitor tends to remain attached to the lipase. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The association does not constitute a strong covalentbond and is subject to significant temperature, concentration, and host, e.g., solvent, dependencies. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This process involves the formation of a palladium-carbon covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The covalentbond to aluminium distorts the perchlorate and renders it unstable. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, the breaking of a covalentbond to a hydrogen atom is a common rate-determining step. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. All compounds that include beryllium have a covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The electrons shared by the two atoms in a covalentbond are counted twice, once for each atom. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In these substances the hydride bond is formally a covalentbond much like the bond made by a proton in a weak acid. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, in the case of chelating resins counter ions are bound to resin by coordinate covalent bond or by its combination with electrostatic interactions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are two electrons shared per single covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In a polar covalentbond, one or more electrons are unequally shared between two nuclei. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Electrons in a covalentbond are essentially shared between the constituent atoms. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Since the chlorine atom is much more electronegative than the hydrogen atom, the covalentbond between the two atoms is quite polar. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In a standard covalentbond each atom contributes one electron. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Phenoxybenzamine forms a permanent covalentbond with adrenergic receptors. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Each fluorine is attached to the sulfur by a single covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When covalentbond formation takes place between the molecules and when large molecules are formed, the reactions tend to be very slow. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is technically not a covalentbond, but instead is classified as a very strong dipole-dipole (non-covalent) interaction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Reactions that are employed should have more the character of classical covalentbond formation in solutions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A sixth position can reversibly bind oxygen by a coordinate covalentbond, completing the octahedral group of six ligands. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Internal asymmetric induction makes use of a chiral center bound to the reactive center through a covalentbond and remains so during the reaction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, this reaction is not immediately bioorthogonal because hydrolysis breaks the covalentbond in the aza-ylide. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One family of natural inhibitors called serpins (abbreviated from serine protease inhibitors) can form a covalentbond with the serine protease, inhibiting its function. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Irreversible inhibitors usually react with the enzyme and change it chemically (e.g. via covalentbond formation). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The counterion and the carbenium ion can have different associations, ranging from a covalentbond, tight ion pair (unseparated), solvent-separated ion pair (partially separated), and free ions (completely dissociated). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Nerve agents disrupt the nervous system by inhibiting the function of the enzyme acetylcholinesterase via forming a covalentbond where acetylcholine would break down (undergoes hydrolysis). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Since the activation energy of a covalentbond is high the reaction will have a slower speed than that of a non-covalent bond (which occurs spontaneously and rapidly). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This is called a covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. On the other end of the linker was a surface anchor where a chemical group on the peptide forms a covalentbond with a particular surface. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Therefore, we attempt to explain the ultrafast disordering solely through destabilization of the covalent bonds by direct electronic excitation. Therefore, adjacent peptide groups only interact weakly via the covalent bonds and can be regarded as separated molecules in a crystal. In contrast, insoluble molecular structures characterized by covalent bonds are, in all likelihood, of the same age as the host rock. Langmuir subsequently introduced the term "covalentbond". From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Any subgroup of atoms of a compound also may be called a radical, and if a covalentbond is broken homolytically, the resulting fragment radicals are referred as free radicals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In this chemoselective ligation, the two reactive functional groups selectively form a covalent bond to produce an oxy-iminium intermediate, which then undergoes ring closure immediately under physiological conditions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. On a new view of the covalentbond, and the formation of free radicals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Carbon monoxide consists of one carbon atom and one oxygen atom, connected by a triple bond that consists of two covalent bonds as well as one dative covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It also has very high affinity for sulfur-containing anions, particularly the thiol (-) groups on the amino acid cysteine and hence in proteins containing cysteine, forming a covalentbond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Depending on the structure calculation program used, special covalent bonds such as disulphide bridges or cyclic peptide bonds have to be enforced by distance restraints. The term "covalentbond" dates from 1939. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The interlocked rings can not be separated without breaking the covalent bonds of the macrocycles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Succinimides are also used to form covalent bonds between proteins or peptides and plastics, which is useful in a variety of assay techniques. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In general bonds of carbon with other elements are covalent bonds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It has been noticed that some phlorotannins have the ability to oxidize and form covalent bonds with some proteins. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. With covalent bonds, an electron moves by hopping to a neighboring bond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Organozinc compounds are those that contain zinccarbon covalent bonds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Soft acids are acids with relatively covalent bonds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Monolayers can be made on bare silicon transducer surfaces with the help of covalent bonds between silicon atom and the double bonds of undecylenic acid. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Once the slack is taken out of backbone chain, covalent bonds holding the chain together hinder further widening of the gap. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Covalent bonds are simply the sharing of electrons. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In diamond or silicon, the atoms share electrons and form covalent bonds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The bond triangle shows that ionic, metallic and covalent bonds are not just particular bonds of a specific type. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Pairs of electrons located between atoms represent covalent bonds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The aggregates are held together by delocalized covalent bonds between lithium and the terminal carbon of the butyl chain. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The three bonds are in fact polar covalent bonds that are strongly polarized. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Metallic unhexquadium should have a very large cohesive energy (enthalpy of crystallization) due to its covalent bonds, most probably resulting in a high melting point. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These orbitals are strongly directional and therefore overlap to form strong covalent bonds, favouring dimerisation of radicals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Carbon atoms are tetravalent, forming four covalent bonds with other atoms, whereas hydrogen atoms bond with only one other atom. 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. |
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