Iron(II) clathrochelate with an annelated heterocyclic fragment is obtained.
Substitution of iron dichloroclathrochelate gave a complex with a quinoxaline fragment.
Ortho-phenylenediamine is used as a nucleophilic agent.
Quinoxaline-containing iron(II) clathrochelate undergoes chemical oxidation.
Clathrochelate product exhibits electrochromism both in solution and as a thin film.