Mild template synthesis in the iron(III)-ethanedithioamide-1,2-formaldehyde triple system on a K[Fe₂(CN)₆] gelatin-immobilized matrix

Abstract

Complexation of Fe^III, in the form of K[Fe₂(CN)₆] gelatin-immobilized matrix, in contact with aqueous-alkaline solutions (pH ∼ 12) containing ethanedithioamide-1,2 and formaldehyde, has been studied. Template synthesis leading to a chelate Fe^III coordination compound with a tetradentate N,N,S,S-donor ligand identified as 4,4,6-trimethyl-1,9-diamino-1,9-dimercapto-3,7-diazanon-3-en-2,8-dithione and hydroxy co-ligand occurs under these specific conditions. Ethanedithioamide-1,2 and formaldehyde are the ligand synthons in the process studied.

Keywords:

• Template synthesis
• Immobilized matrix
• Macrocyclic complex
• Hexacyanoferrate(II)

Acknowledgements

Financial support from the Russian Foundation of Basic Researches (grant N 06-03-32003) is acknowledged. Also, the authors thank Super-Computer Center of Kazan Scientific Center of Russian Academy of Sciences for assistance in realization of quantum-chemical calculations of complexes studied.