Analytical Applications of Reactions of Iron(III) and Hexacyanoferrate(III) with 2,10-Disubstituted Phenothiazines

Table 1

The structures of 2,10-disubstituted phenothiazines studied with Fe(III) and K₃[Fe(CN)₆] and colors of their cation radicals.

No.	Trivial name			Color of oxidation products (radicals)
		–R1	–R2
1	Promazine–HCl		–H	Orange
2	Chlorpromazine–HCl		–Cl	Red
3	Levomepromazine–C4H4O4		–OCH3	Violet
4	Methopromazine–C4H4O4		–OCH3	Violet
5	Perazine		–H	Orange
6	Trifluperazine–2HCl		–CF3	Orange
7	Propericiazine		–CN	Red
8	Perphenazine		–Cl	Red
9	Fluphenazine–2 HCl		–CF3	Orange
10	Thioridazine–HCl		–SCF3	Blue