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Chemical characterization of a volatile dubnium compound, DbOCl$$_3$$

Chiera, N. M.*; Sato, Tetsuya  ; Eichler, R.*; Tomitsuka, Tomohiro; Asai, Masato ; Adachi, Sadia*; Dressler, R.*; Hirose, Kentaro ; Inoue, Hiroki*; Ito, Yuta ; Kashihara, Ayuna*; Makii, Hiroyuki  ; Nishio, Katsuhisa  ; Sakama, Minoru*; Shirai, Kaori*; Suzuki, Hayato*; Tokoi, Katsuyuki*; Tsukada, Kazuaki ; Watanabe, Eisuke*; Nagame, Yuichiro*

The formation and the chemical characterization of single atoms of dubnium (Db, element 105), in the form of its volatile oxychloride, was investigated using the on-line gas phase chromatography technique, in the temperature range 350 - 600 $$^circ$$C. Under the exact same chemical conditions, comparative studies with the lighter homologs of group-5 in the Periodic Table clearly indicate the volatility sequence being NbOCl$$_3 > $$ TaOCl$$_3 geq$$ DbOCl$$_3$$. From the obtained experimental results, thermochemical data for DbOCl$$_3$$ were derived. The present study delivers reliable experimental information for theoretical calculations on the chemical properties of transactinides.

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Category:Chemistry, Multidisciplinary

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