Chemie superschwerer Elemente

Schädel, M.

doi:10.1002/ange.200461072

Cited by 23 publications

(23 citation statements)

References 229 publications

(344 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For Hs, a member of group 8, the best suited volatile molecule is the tetroxide. This was the first time gas chemical studies had to be performed in cryo-chromatographic setups [3] due to the very high volatility of HsO 4 . Chemical studies on the heavier 6d elements Mt, Ds, and Rg are still missing.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Gas chemical properties of heaviest elements

Gäggeler¹

2011

Radiochimica Acta

View full text Add to dashboard Cite

Summary. Chemical studies at the upper end of the periodic table have reached atomic number 114. Recent experiments aiming at investigating chemical properties of elements Cn, 113, and 114 are summarized. Though partly preliminary, all these elements behave as expected: due to the filled 6d 10 shell, they do not behave like transition metals anymore, as observed for the lighter transactinides. They exhibit a volatile behavior as expected for 7s and 7 p elements. On the other hand, due to the extremely low signal to noise ratio in detectors used to identify separated products highest precaution on identifying single atoms is mandatory. As an example, published early attempts to synthesize Cn and to perform chemical studies with this element that could not be confirmed in later studies are summarized.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Chemical studies on the heavier 6d elements Mt, Ds, and Rg are still missing. Several review articles and monographs summarize these early gas chemical investigations [2,[4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Gas chemical properties of heaviest elements

Gäggeler¹

2011

Radiochimica Acta

View full text Add to dashboard Cite

show abstract

“…Frequently used reactions for the production of nuclides applied in chemistry experiments from element 104 to 108 [12,22]. Taking into account, collection and transport efficiencies including nuclear decay losses, between 10% and 80% of these short-lived nuclei become available for chemical investigations; for more details, see [9] and §4.…”

Section: (B) Nuclear Syntheses and Decaysmentioning

confidence: 99%

“…Rf and Sg are selected to exemplify techniques and to show similarities and deviations of chemical properties. More information on the aqueous-phase chemistry of Rf, Db and Sg, the heaviest element which has been studied in a liquid phase up to now, can be found in [9,10,12,47].…”

Section: Chemical Aspectsmentioning

confidence: 99%

See 1 more Smart Citation

Chemistry of the superheavy elements

Schädel

2015

Phil. Trans. R. Soc. A.

Self Cite

View full text Add to dashboard Cite

One contribution of 18 to a discussion meeting issue 'The new chemistry of the elements' . Darmstadt, GermanyThe quest for superheavy elements (SHEs) is driven by the desire to find and explore one of the extreme limits of existence of matter. These elements exist solely due to their nuclear shell stabilization. All 15 presently 'known' SHEs (11 are officially 'discovered' and named) up to element 118 are short-lived and are manmade atom-at-a-time in heavy ion induced nuclear reactions. They are identical to the transactinide elements located in the seventh period of the periodic table beginning with rutherfordium (element 104), dubnium (element 105) and seaborgium (element 106) in groups 4, 5 and 6, respectively. Their chemical properties are often surprising and unexpected from simple extrapolations. After hassium (element 108), chemistry has now reached copernicium (element 112) and flerovium (element 114). For the later ones, the focus is on questions of their metallic or possibly noble gas-like character originating from interplay of most pronounced relativistic effects and electronshell effects. SHEs provide unique opportunities to get insights into the influence of strong relativistic effects on the atomic electrons and to probe 'relativistically' influenced chemical properties and the architecture of the periodic table at its farthest reach. In addition, they establish a test bench to challenge the validity and predictive power of modern fully relativistic quantum chemical models.

show abstract

Ist Eka‐Quecksilber (Element 112) ein Metall der Gruppe 12?

et al. 2007

View full text Add to dashboard Cite

Die Synthese superschwerer Elemente stellt die Experimentalphysik vor eine große Herausforderung. Gleichzeitig werden dabei fundamentale Fragen zur Kernstruktur undstabilität aufgeworfen.[1] Es gab bereits große Erfolge bei der Herstellung der Elemente mit einer Ordnungszahl bis zu Z = 118 [2][3][4][5] und auch bei der Entwicklung einer echten Einzelatomchemie für die Elemente mit einer Ordnungszahl bis zu Z = 108 [6,7] [8,9] Das nächste superschwere Element, für das Einzelatomchemie in Vorbereitung ist, ist das Element 112 [10][11][12] (t 1/2 für 283 112 beträgt ungefähr 4 s [13] ), das auch als Eka-Quecksilber bekannt ist. Die chemischen Eigenschaften des Elements 112 sind umstritten: Frühere Vorhersagen reichen von quecksilberähnlichen Eigenschaften [16,17] bis hin zu einem Verhalten ähnlich dem der Edelgase, [8,18,19] letzteres wegen der starken relativistischen Kontraktion des 7s-Schale. Dementsprechend sind bereits Modellstudien durchgeführt worden, [10-12, 14, 15]

show abstract

Chemie superschwerer Elemente

Cited by 23 publications

References 229 publications

Gas chemical properties of heaviest elements

Gas chemical properties of heaviest elements

Chemistry of the superheavy elements

Ist Eka‐Quecksilber (Element 112) ein Metall der Gruppe 12?

Contact Info

Product

Resources

About