Synthesis and detection of a seaborgium carbonyl complex

Abstract

Experimental investigations of transactinoide elements provide benchmark results for chemical theory and probe the predictive power of trends in the periodic table. So far, in gas-phase chemical reactions, simple inorganic compounds with the transactinoide in its highest oxidation state have been synthesized. Single-atom production rates, short half-lives, and harsh experimental conditions limited the number of experimentally accessible compounds. We applied a gas-phase carbonylation technique previously tested on short-lived molybdenum (Mo) and tungsten (W) isotopes to the preparation of a carbonyl complex of seaborgium, the 106th element. The volatile seaborgium complex showed the same volatility and reactivity with a silicon dioxide surface as those of the hexacarbonyl complexes of the lighter homologs Mo and W. Comparison of the product's adsorption enthalpy with theoretical predictions and data for the lighter congeners supported a Sg(CO)6 formulation.

Spectra of barium, radium, and element 120: Application of the combined correlation-potential, singles-doubles, and configuration-interactionab initiomethods

“…Enhanced stability could make atomic and chemical studies of this element possible. Already, chemical studies involving the superheavy element Sb (Z=106) have proved successful [28]. The current calculations for E120 extend the spectral range considered in previous works [29][30][31].…”

Decomposition studies of group 6 hexacarbonyl complexes. Part 2: Modelling of the decomposition process

“…Recently, the synthesis of the seaborgium hexacarbonyl complex Sg(CO) 6 has been reported [1]. Thus, for the first time chemistry acquired a Sg compound in its zeroth oxidation state.…”

Chemistry aided nuclear physics studies

“…These studies demonstrated the potential that carbonyl chemistry bears for superheavy element research. In a follow-up experiment at the GARIS separator at RIKEN, the first carbonyl complex of a superheavy element was synthesized -seaborgium hexacarbonyl [15]. Seaborgium could be isolated from the huge amount of target-like transfer products which also reached the focal plane of GARIS.…”

“…Recently, the in-situ chemistry of metal carbonyl complexes has been explored [14][15][16][17][18] and it is still under investigation (see contribution R. Eichler et al in this proceedings). Group 6 and group 8 elements were known to form volatile complexes with carbon monoxide.…”