Results (
English) 2:
[Copy]Copied!
the cathodic peak potential and the anodic peak potential (DEp)<br>were in range of 61e84 mV. The reversibility coefficients (defined<br>as the ratio of the total cathodic reverse and the anodic forward<br>currents i<br>p,c/ip,a) are 1.0 for 9 and 10 and 1.2 for 11 at n ¼ 0.2 V s1.<br>Complex 11 also bears the dicobalt hexacarbonyl group as a second<br>redox-active fragment. The Co2(CO)6 group in 11 undergoes irreversible oxidation at the potential (Ep,a) of 0.645 V versus the<br>ferrocene/ferrocenium couple. Similarly, the irreversible oxidation<br>of the dicobalt hexacarbonyl group in complex 8 was recorded at<br>the potential (Ep,a) of 0.612 V versus the ferrocene/ferrocenium<br>couple. The similar irreversible electrochemical behavior of metalcarbonyl groups in anodic scan have been reported previously<br>[25,28]. The ferrocenyl moiety in complex 10 was insensitive on the<br>coordinatiom of the Co2(CO)6 group; the ferrocenyl-centered halfwave potentials of complexes 10 and 11 differ by only 3 mV.<br>2.3. X-ray diffraction study of compound 7<br>The molecular structure of chromone 7 was determined by a<br>single-crystal X-ray structure analysis. Crystals suitable for X-ray<br>analysis were obtained from a layered chloroform/n-hexane<br>mixture containing 7. Compound 7 crystallizes in the space group P<br>21/c with four molecules of 7 per unit cells. The molecular structure
Being translated, please wait..
