Researchers present a milestone in chemical studies of superheavy elements
An international collaboration led by research groups from Mainz and Darmstadt, Germany, has achieved the synthesis of a new class of chemical compounds for superheavy elements at the RIKEN Nishina Center for Accelerator-based Research (RNC) in Japan. For the first time, a chemical bond was established between a superheavy element – seaborgium (element 106) in the present study – and a carbon atom. Eighteen atoms of seaborgium were converted into seaborgium hexacarbonyl complexes, which include six carbon monoxide molecules bound to the seaborgium. Its gaseous properties and adsorption to a silicon dioxide surface were studied, and compared with similar compounds of neighbors of seaborgium in the same group of the periodic table. The study opens perspectives for much more detailed investigations of the chemical behavior of elements at the end of the periodic table, where the influence of effects of relativity on chemical properties is most pronounced.