Formation and thermochemical properties of oxychlorides of Nb and Ta; Towards the gas-phase investigation of the Superheavy Element dubnium (Db) oxychloride

Chiera, N. M.; Sato, Tetsuya   ; Asai, Masato  ; Suzuki, Hayato*; Tokoi, Katsuyuki; Tomitsuka, Tomohiro; Toyoshima, Atsushi; Tsukada, Kazuaki  ; Nagame, Yuichiro 

The adsorption of single molecules (i.e., tracer-amount scale) of NbOCl and TaOCl on quartz surfaces was explored by applying an isothermal gas-chromatographic method. Thermochemical information was obtained, in good agreement with literature data. The future accomplishment of comparative studies with DbOCl under the same experimental conditions will provide a direct information on the volatility trend in Group-5 elements, and hence, on the magnitude of relativistic effects on dubnium's electronic structure.