| 词汇 | example_english_transition-metal |
| 释义 | Examples of transition metalThese 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. As a result, these soils contain high concentrations of oxidized transitionmetal minerals, particularly chromium and manganese, as well as perchlorate. A difficulty is that there are not many transitionmetal systems for which accurate experimental binding energies are known. Therefore, it has been most successfully applied to organic radicals and half-integer spin transitionmetal ions. Site-specific labeling of proteins with cyclen-bound transitionmetal ions. Electronic structure analysis of electron-transfer matrix elements for transitionmetal redox pairs. It is also not conceivable why hydrogen peroxide (of hypothetically biological origin) should release oxygen when humidified, without mentioning the presence of any transitionmetal salt catalysts. Enantioselective reductions of ketones may be accomplished through the use of catalytic amounts of chiral transitionmetal complexes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is typically the second most abundant transitionmetal in organisms after iron and it is the only metal which appears in all enzyme classes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For transitionmetal compounds, the crystal field splitting diagram for square planar geometry can thus be derived from the octahedral diagram. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Transitionmetal complexes of both types of carbenes have been generated "in situ". From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are also transitionmetal chalcogenols which have potential to serve as catalysts and stabilize nanoparticles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Aryl halides or triflates can be coupled with diboronyl reagents using transitionmetal catalysts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Transitionmetal oxides are also frequently used as pigments in paints and plastics, most notably titanium dioxide. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Transitionmetal carbene complexes catalyze the olefin metathesis reaction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These transitionmetal electrodes offer excellent reversibility, with several hundred-thousand cycles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Transitionmetal carbyne complexes can also react with electrophiles. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It depends on factors such as the size and charge on the ion and, in the case of transitionmetal ions, crystal field effects. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The valence of a transitionmetal center can be described by standard quantum numbers. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This reaction generally causes them to become transitionmetal carbene complexes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, transitionmetal oxides are not the only examples of deviations from stoichiometry. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Here the synergistic -allylation of aldehydes was accomplished by utilizing a transitionmetal complex in combination with a chiral amine catalyst. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. His research interests include the design and synthesis of novel heterocyclic carbenes, and functionalised derivatives as ligands in transitionmetal complexes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is an octahedral transitionmetal complex in which three bidentate oxalate ions are bound to an iron center. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Pyridine itself is a relatively weak ligand in forming complexes with transitionmetal ions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. With 20 valence electrons, nickelocene has the highest electron count of the transitionmetal metallocenes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Tantalum is a rare, hard, blue-gray, lustrous transitionmetal that is highly corrosion-resistant. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some of the transitionmetal oxides are found in nature as non-stoichiometric compounds, with slightly less metal than the chemical formula would show. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a lustrous transitionmetal with a silver color, low density and high strength. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a dense, malleable, ductile, precious, gray-white transitionmetal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In many transitionmetal compounds, the empty coordination site is stabilized by a coordinating solvent like tetrahydrofuran. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It participates in ferroxidase activity, binding, iron ion binding, oxidoreductase activity, ferric iron binding, metal ion binding as well as transitionmetal binding. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This complex exhibits the fastest water exchange rate (speed of water ligands attaching and detaching) for any transitionmetal aquo complex. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The most popular of these fluorozirconium-based conversion coatings, introduced in 2005, incorporates the transitionmetal vanadium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Optical activity in transitionmetal ion complexes have been attributed to configurational, conformational and the vicinal effects. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Most pigments are charge-transfer complexes, like transitionmetal compounds, with broad absorption bands that subtract most of the colors of the incident white light. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Here, racemization occurs with loss of the acetate, forming a cationic complex with the transitionmetal center, as shown below. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A key concept in its chemistry is transmetallation of its organic residue to a transitionmetal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Transitionmetal oxides have a wide variety of surface structures which affect the surface energy of these compounds and influence their chemical properties. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For this reason, structural defects in transitionmetal oxides greatly influence their catalytic properties. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A number of transitionmetal oxides are also superconductors. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Since then, his laboratory has made significant contributions in the synthesis, structure, and bonding of transitionmetal compounds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, zinc shares many characteristics with the neighboring transitionmetal, copper. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The slightly less resistant group includes the transitionmetal ions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. His research has focused on transitionmetal oxides but has extended to other strongly correlated electron systems. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Late in his career, his research interests became more diverse, yet he never left his central focus of transitionmetal chemistry. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The source of transferrable halogen is the copper salt, so this must be present in concentrations comparable to the transitionmetal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is noteworthy for its ability to bind transitionmetal ions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Generally when a transitionmetal carbyne complex undergoes photooxidation a new organic ring structure is formed. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Silicide contacts can also be deposited by direct sputtering of the compound or by ion implantation of the transitionmetal followed by annealing. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The main-group elements form a ladder spiraling around the transitionmetal helix. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A soft, white, lustrous transitionmetal, it has the highest electrical conductivity of any element and the highest thermal conductivity of any metal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Phosphors are often transitionmetal compounds or rare earth compounds of various types. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. His research on cathode materials included thermodynamics studies of phase transitions in lithiated transitionmetal oxides and phosphates. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The d electron count is an effective way to understand the geometry and reactivity of transitionmetal complexes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A lustrous, silvery gray, tetravalent transitionmetal, hafnium chemically resembles zirconium and is found in zirconium minerals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a catalytic reaction with carbene, or more accurately, transitionmetal carbene complex intermediates. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Lead compounds are optimized using computer-aided techniques and are preferentially synthesized using high-speed chemistry and efficient transitionmetal-catalyzed reactions developed. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The magnetic moments of gadolinium compounds are larger than those of any transitionmetal ion. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Following the reaction, any remaining transitionmetal is removed by chemical etching, leaving silicide contacts in only the active regions of the device. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. With transitionmetal alkyls, these oxides behave as electrophiles and insert into the bond between metals and their relatively nucleophilic alkyl ligands. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a red volatile solid that is classified as a transitionmetal thiolate complex. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Most luminophores consist of conjugated pi systems or transitionmetal complexes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This makes them very difficult to handle in the absence of stabilization provided by the transitionmetal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These special anions are essential components of homogeneous olefin polymerisation catalysts, where the active catalyst is a coordinatively unsaturated, cationic transitionmetal complex. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Many specific transitionmetal ligands contributing to metal detoxification and transport are up-regulated in plants when metals are available in the rhizosphere. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a silvery-metallic transitionmetal chemically similar to the lanthanides and it has often been classified as a rare earth element. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In it the total number of valence electrons per transitionmetal atom is 14. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The advent of transitionmetal catalyzed reagents provides alternative stereospecific methods for cyclopropanation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Transitionmetal carbides are not saline carbides but their reaction with water is very slow and is usually neglected. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Carbides can be generally classified by chemical bonding type as follows: (i) salt-like, (ii) covalent compounds, (iii) interstitial compounds, and (iv) intermediate transitionmetal carbides. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Transitionmetal alkoxides are widely used for coatings and as catalysts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As such organo-lanthanide compounds exhibit carbanion-like behaviour, unlike in transitionmetal organometallic compounds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Transitionmetal clusters are frequently composed of refractory metal atoms. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Though similar ground states are observed in molecules containing transitionmetal atoms, it is unprecedented in organic molecules. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Free carbenes as well as numerous transitionmetal complexes have been reported. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are several mesoionic carbenes that can not be generated as free compounds, but can be synthesized as a ligand in a transitionmetal complex. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This theory has been used to describe various spectroscopies of transitionmetal coordination complexes, in particular optical spectra (colors). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. He also claimed as his discovery two transitionmetal elements: seaborgium and bohrium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Contacts are often made by depositing the transitionmetal and forming the silicide by annealing with the result that the silicide may be non-stoichiometric. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a soft, grey, ductile transitionmetal, which is often found in the pyrochloremineral, the main commercial source for niobium, and columbite. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The chemical properties of this silvery gray, crystalline transitionmetal are intermediate between rhenium and manganese. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The transitionmetal atoms form a chimney with helical zigzag chain. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Late transitionmetal hydroamination catalysts have multiple models based on the regioselective determining step. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Low coordinate main group and transitionmetal complexes and multiply bonded compounds of the heavier main group and transitionmetal elements. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The nitrate ion forms much stronger complexes with the uranyl ion than it does with transitionmetal and lanthanide ions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. More complex nucleations occur with transitionmetal ligand combinations. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In many synthetic processes using transitionmetal catalysts, metal nanoparticles play an important role as the actual catalyst or as a catalyst reservoir. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Many chiral sulfoxides are prepared from asymmetric catalytic oxidation of achiral sulfides with a transitionmetal and a chiral ligand. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a rare transitionmetal belonging to the platinum group of the periodic table. 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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