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Chemistry of superheavy elements.
- M. Schädel
- Physics, ChemistryAngewandte Chemie
- 9 January 2006
These results place the architecture of the far-end of the Periodic Table on the test bench and probe the increasingly strong relativistic effects that influence the chemical properties there.
How well do we understand the synthesis of heavy elements by heavy-ion induced fusion?
Experimental cross sections to synthesize heavy ion induced fusion reactions are confronted with calculations using the conventional picture of complete fusion after passing the barrier plus…
Chemical investigation of hassium (element 108)
Evidence that the chemical properties of hassium and its lighter homologue osmium are similar is provided, thus confirming that hassio exhibits properties as expected from its position in group 8 of the periodic table.
48Ca+249Bk fusion reaction leading to element Z = 117: long-lived α-decaying 270Db and discovery of 266Lr.
The superheavy element with atomic number Z=117 was produced as an evaporation residue in the (48)Ca+(249)Bk fusion reaction at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany and a hitherto unknown α-decay branch in (270)Db was observed, which populated the new isotope (266)Lr.
Chemistry of superheavy elements
- M. Schädel
- PhysicsPhilosophical Transactions of the Royal Society A…
- 1 March 2003
A test bench is established to challenge the validity and predictive power of modern fully relativistic quantum chemical models and to probe ‘relativistically’ influenced chemical properties and the architecture of the periodic table at its farthest reach.
Evidence for the formation of sodium hassate(VIII)
Summary Hassium, element 108, was produced in the fusion reaction between 26Mg and 248Cm. The hassium recoils were oxidized in-situ to a highly volatile oxide, presumably HsO4, and were transported…
Synthesis and detection of a seaborgium carbonyl complex
A gas-phase carbonylation technique previously tested on short-lived molybdenum and tungsten isotopes was applied to the preparation of a carbonyl complex of seaborgium, the 106th element, and it was concluded that hexacarbonyl Sg(CO)6 was the most likely structural formula.
ARCA II – A New Apparatus for Fast, Repetitive HPLC Separations
The microcomputer controlled Automated Rapid Chemistry Apparatus, ARCA, is described in its newly designed version for the study of chemical properties of element 105 in aqueous solutions. This…
Spectroscopy of element 115 decay chains.
For the first time, precise spectroscopy allows the derivation of excitation schemes of isotopes along the decay chains starting with elements Z>112.
Fluoride complexation of rutherfordium (Rf, element 104)
The fluoride complexation of the group-4 elements Zr, Hf and Rf, and of the pseudo-homolog Th, has been investigated in mixed HNO3/HF solutions by studying Kd values on both cation exchange resins…