any of agroupofmetalchemicalelementsincludingcopperandgoldthat show more than onevalency(= thenumberofhydrogenatomsthat cancombinewith one ofitsatomstoformacompound)
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Chemical elements
actinium
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As a result, these soils contain high concentrations of oxidizedtransitionmetalminerals, particularly chromium and manganese, as well as perchlorate.
From theCambridge English Corpus
A difficulty is that there are not manytransitionmetalsystems for which accurate experimental binding energies are known.
From theCambridge English Corpus
Therefore, it has been most successfully applied to organic radicals and half-integer spintransitionmetalions.
From theCambridge English Corpus
Site-specific labeling of proteins with cyclen-boundtransitionmetalions.
From theCambridge English Corpus
Electronic structure analysis of electron-transfer matrix elements fortransitionmetalredox pairs.
From theCambridge English Corpus
It is also not conceivable why hydrogen peroxide (of hypothetically biological origin) should release oxygen when humidified, without mentioning the presence of anytransitionmetalsalt catalysts.
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Enantioselective reductions of ketones may be accomplished through the use of catalytic amounts of chiraltransitionmetalcomplexes.
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It is typically the second most abundanttransitionmetalin organisms after iron and it is the only metal which appears in all enzyme classes.
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Fortransitionmetalcompounds, the crystal field splitting diagram for square planar geometry can thus be derived from the octahedral diagram.
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Transitionmetalcomplexes of both types of carbenes have been generated "in situ".
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There are alsotransitionmetalchalcogenols which have potential to serve as catalysts and stabilize nanoparticles.
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Aryl halides or triflates can be coupled with diboronyl reagents usingtransitionmetalcatalysts.
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Transitionmetaloxides are also frequently used as pigments in paints and plastics, most notably titanium dioxide.
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Transitionmetalcarbene complexes catalyze the olefin metathesis reaction.
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Thesetransitionmetalelectrodes offer excellent reversibility, with several hundred-thousand cycles.
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