I've tried to run a CV experiment with ferrocene in chloroform. Of course dry chloroform, Supp. Electr. - TBAPF6. Work El - GC, counter el - Pt, ref. el. - Ag/AgCl.
It looks like there are some catalytic processes going on at potential higher than 0.4-0.5 V vs Ag/AgCl. Does somebody have any ideas? I couldn't find any reference on ferrocene in Chloroform.
Thanks in advance.
Dear Dumitru,
Please find enclosed an article regarding electrochemistry of ferrocene in diferent electrolyte media. I expect according with your reference electrode used Ag/AgCl, that the ferrocene species will undergo oxidation at a more positive potential. Try to extend the measurements to a more positive potential.
I think that the measurements in a solvent such as DCM (see the article) should be more similar with your system. Be aware also about low electric conductivity in a low-polar solvent such us chloroform.
Best regards and good luck!
Marius
Dear Marius,
Thanks a lot,
I've seen this paper before. But there is still no reference for the Chloroform.
I use a quit high conc. of supp. electr. (0.2 M)...
It is well known that ferrocene decompose chloroform under light, is it possible that the ferricinium that forms during electrooxidation decompose chloroform as well?
Did you try to see if your electrolyte give the same response without ferrocene in solution?
Yes,
The red line is the background with only CHCl3 and TBAPF6. After addition of ferrocene you can see the black line...
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