当前位置：
X-MOL 学术
›
Chem. Commun.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Astatine partitioning between nitric acid and conventional solvents: indication of covalency in ketone complexation of AtO.
Chemical Communications ( IF 4.3 ) Pub Date : 2020-06-29 , DOI: 10.1039/d0cc03804k Jonathan D Burns 1 , Evgeny E Tereshatov , Mallory A McCarthy , Lauren A McIntosh , Gabriel C Tabacaru , Xin Yang , Michael B Hall , Sherry J Yennello
Chemical Communications ( IF 4.3 ) Pub Date : 2020-06-29 , DOI: 10.1039/d0cc03804k Jonathan D Burns 1 , Evgeny E Tereshatov , Mallory A McCarthy , Lauren A McIntosh , Gabriel C Tabacaru , Xin Yang , Michael B Hall , Sherry J Yennello
Affiliation
|
Astatine-211 has been produced at Texas A&M University on the K150 cyclotron, with a yield of 890 ± 80 MBq through the 209Bi(α,2n)211At 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 HNO3 and the extraction of 211At was investigated into a variety of organic solvents in 1–3 M HNO3. Extraction of 211At 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 207Bi were ≤0.05 in all cases. The extraction of 211At into both methyl isobutyl ketone and 3-octanone showed a strong, linear dependence on the HNO3 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.
中文翻译：
nitr胺在硝酸和常规溶剂之间的分配：表明AtO的酮络合价。
Astatine-211是在德克萨斯A＆M大学用K150回旋加速器生产的，通过209 Bi（α，2n）211 At反应，通过8 h轰击，束流为4–8μA，产生890±80 MBq的产量。28.8 MeV的α粒子束能量。然后将目标物溶于HNO 3中，并研究了在1-3 M HNO 3中各种有机溶剂中211 At的萃取。对于二异丙醚，1-癸醇，1-辛醇，3-辛酮和甲基，观察到211 At的萃取，分布比高达11.3±0.6、12.3±0.8、42.2±2.2、69±4和95±6。异丁基酮的分布比例分别为207在所有情况下，Bi≤0.05。在甲基异丁基酮和3-辛酮中萃取211 At均显示出对HNO 3初始水浓度的强烈线性依赖性，并且萃取效果优于其他溶剂。DFT计算表明，酮的羰基氧与At金属中心之间的结合更牢固。
更新日期：2020-08-06
中文翻译：
nitr胺在硝酸和常规溶剂之间的分配：表明AtO的酮络合价。
Astatine-211是在德克萨斯A＆M大学用K150回旋加速器生产的，通过209 Bi（α，2n）211 At反应，通过8 h轰击，束流为4–8μA，产生890±80 MBq的产量。28.8 MeV的α粒子束能量。然后将目标物溶于HNO 3中，并研究了在1-3 M HNO 3中各种有机溶剂中211 At的萃取。对于二异丙醚，1-癸醇，1-辛醇，3-辛酮和甲基，观察到211 At的萃取，分布比高达11.3±0.6、12.3±0.8、42.2±2.2、69±4和95±6。异丁基酮的分布比例分别为207在所有情况下，Bi≤0.05。在甲基异丁基酮和3-辛酮中萃取211 At均显示出对HNO 3初始水浓度的强烈线性依赖性，并且萃取效果优于其他溶剂。DFT计算表明，酮的羰基氧与At金属中心之间的结合更牢固。
京公网安备 11010802027423号