Chemical Characterization of a Volatile Dubnium Compound, DbOCl3

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

doi:10.1002/anie.202102808

Chemical Characterization of a Volatile Dubnium Compound, DbOCl₃

Angew Chem Int Ed Engl. 2021 Aug 9;60(33):17871-17874. doi: 10.1002/anie.202102808. Epub 2021 Jul 2.

Authors

Nadine M Chiera¹, Tetsuya K Sato^{2

3}, Robert Eichler¹, Tomohiro Tomitsuka^{2

4}, Masato Asai², Sadia Adachi⁵, Rugard Dressler¹, Kentaro Hirose², Hiroki Inoue⁴, Yuta Ito², Ayuna Kashihara⁵, Hiroyuki Makii², Katsuhisa Nishio², Minoru Sakama⁶, Kaori Shirai⁴, Hayato Suzuki^{2

3}, Katsuyuki Tokoi^{2

3}, Kazuaki Tsukada², Eisuke Watanabe⁷, Yuichiro Nagame²

Affiliations

¹ Laboratory of Radiochemistry, Paul Scherrer Institute, 5232, Villigen PSI Ost, Switzerland.
² Advanced Science Research Center, Japan Atomic Energy Agency, Tokai-mura, Ibaraki, 319-1195, Japan.
³ Graduate School of Science and Engineering, Ibaraki University, Mito, Ibaraki, 310-8512, Japan.
⁴ Graduate School of Science and Technology, Niigata University, Nishi-ku, Niigata, 8050, Japan.
⁵ Graduate School of Science, Tsukuba University, Tsukuba, Ibaraki, 305-8577, Japan.
⁶ Graduate School of Biomedical Sciences, Tokushima University, Tokushima, 770-8503, Japan.
⁷ Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan.

Abstract

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 °C. Under the exactly same chemical conditions, comparative studies with the lighter homologues of Group 5 in the Periodic Table clearly indicate the volatility sequence being NbOCl₃ > TaOCl₃ ≥ DbOCl₃ . From the obtained experimental results, thermochemical data for DbOCl₃ were derived. The present study delivers reliable experimental information for theoretical calculations on chemical properties of transactinides.

Keywords: Group 5 elements; dubnium; gas chromatography; thermochemistry; transactinides.

Abstract

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