1. Chemical Characterization of a Volatile Dubnium Compound, DbOCl3
- Author
-
Katsuyuki Tokoi, Kazuaki Tsukada, Hiroki Inoue, Nadine M. Chiera, Yuta Ito, Ayuna Kashihara, Rugard Dressler, Tomohiro Tomitsuka, Eisuke Watanabe, Kaori Shirai, Masato Asai, Katsuhisa Nishio, Sadia Adachi, Tetsuya Sato, Kentaro Hirose, Hayato Suzuki, Yuichiro Nagame, Robert Eichler, Minoru Sakama, and Hiroyuki Makii
- Subjects
Dubnium ,Materials science ,Transactinides | Hot Paper ,Communication ,gas chromatography ,Group 5 elements ,Analytical chemistry ,Transactinide element ,chemistry.chemical_element ,General Chemistry ,Atmospheric temperature range ,Catalysis ,Communications ,Characterization (materials science) ,Gas phase ,chemistry ,Thermochemistry ,thermochemistry ,Gas chromatography ,dubnium ,Volatility (chemistry) ,transactinides - 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., Dubnium obeys Mendeleev's periodicity. Fifty years after the discovery of this element, its chemical behavior was experimentally revisited. From the gas chromatographic investigation of the volatile oxychloride compound, a trend of decreasing volatility along Group 5 elements was deduced, in agreement with the expectations by the laws established in the Periodic Table.
- Published
- 2021