کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10269779 | 459892 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The positive effect of oxygenated solvents for the synthetic use of electroregenerated ytterbium(II)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The positive effect of oxygenated solvents for the synthetic use of electroregenerated ytterbium(II) The positive effect of oxygenated solvents for the synthetic use of electroregenerated ytterbium(II)](/preview/png/10269779.png)
چکیده انگلیسی
The addition of an oxygen based solvent, THF for example, to classical electrochemical media (DMF or ACN) improved the electrochemical behavior of the Yb(III)/Yb(II) couple. Two highlights of using 2:1 THF-DMF include the diminishing of the passivation at the carbon vitreous electrode when successive cycles are recorded and the almost totally reversible response of the system. The complexing effect of THF positively affects the electron-transfer kinetics of the redox couple, being faster in DMF-THF than in ACN-THF. A similar complexation effect was confirmed using tetraglyme as a cosolvent. The use of 2:1 THF-DMF allowed us to successfully substitute reticulated vitreous carbon in place of mercury as the working electrode for the Yb(II) electrogeneration experiments. Due to the stability of the alcoholate-Yb(III) complex, the recycling of Yb(III) to Yb(II) could not be achieved in the pinacolization reactions that were attempted.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 50, Issue 6, 30 January 2005, Pages 1383-1390
Journal: Electrochimica Acta - Volume 50, Issue 6, 30 January 2005, Pages 1383-1390
نویسندگان
Bernardo A. Frontana-Uribe, R. Daniel Little,