Abstract
Electrochemical and chemical properties of titanum in fused ethylpyridinium. bromide, at 127°, have been studied. The sole redox system for this element is Ti 4+/Ti 3+, ethylpyridinium cation being reduced before Ti 3+. The standard potential of the system, versus the normal hydrogen electrode in this medium, is −0.205 V (+0.120 V for the I 2/I − system, and +0.460 V for the Br 2/Br − system). By determination of current-potential curves with a rotating platinum electrode. I:I complexes have been identified between Ti 3+ and pyridine, 2,2'-dipyridyl, 1,10-phenanthroline and PAN. and also between Ti 4+ and the same compounds except, pyridine. The titanous complexes are more stable than the titanic complexes.
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