التفاصيل البيبلوغرافية
| العنوان: |
Astatine partitioning between nitric acid and conventional solvents: indication of covalency in ketone complexation of AtO . |
| المؤلفون: |
Burns JD; Nuclear Engineering and Science Center, Texas A&M University, College Station, TX 77843, USA. burns.jon@tamu.edu., Tereshatov EE, McCarthy MA, McIntosh LA, Tabacaru GC, Yang X, Hall MB, Yennello SJ |
| المصدر: |
Chemical communications (Cambridge, England) [Chem Commun (Camb)] 2020 Aug 14; Vol. 56 (63), pp. 9004-9007. Date of Electronic Publication: 2020 Jul 08. |
| نوع المنشور: |
Journal Article |
| اللغة: |
English |
| بيانات الدورية: |
Publisher: Royal Society of Chemistry Country of Publication: England NLM ID: 9610838 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1364-548X (Electronic) Linking ISSN: 13597345 NLM ISO Abbreviation: Chem Commun (Camb) Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: |
Original Publication: Cambridge : Royal Society of Chemistry |
| مستخلص: |
Astatine-211 has been produced at Texas A&M University on the K150 cyclotron, with a yield of 890 ± 80 MBq through the 209 Bi(α,2n) 211 At reaction via an 8 h bombardment with a beam current of 4-8 μA and an α-particle beam energy of 28.8 MeV. The target was then dissolved in HNO 3 and the extraction of 211 At was investigated into a variety of organic solvents in 1-3 M HNO 3 . Extraction of 211 At with distribution ratios as high as 11.3 ± 0.6, 12.3 ± 0.8, 42.2 ± 2.2, 69 ± 4, and 95 ± 6 were observed for diisopropyl ether, 1-decanol, 1-octanol, 3-octanone, and methyl isobutyl ketone, respectively, while the distribution ratios for 207 Bi were ≤0.05 in all cases. The extraction of 211 At into both methyl isobutyl ketone and 3-octanone showed a strong, linear dependence on the HNO 3 initial aqueous concentration and better extraction than other solvents. DFT calculations show stronger binding between the carbonyl oxygen of the ketone and the At metal center. |
| تواريخ الأحداث: |
Date Created: 20200709 Date Completed: 20200810 Latest Revision: 20200810 |
| رمز التحديث: |
20221213 |
| DOI: |
10.1039/d0cc03804k |
| PMID: |
32638758 |
| قاعدة البيانات: |
MEDLINE |
