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Synthesis of an ionic liquid with an iron coordination cation

Anderson, Travis M.; Ingersoll, David I.; Hensley, Alyssa H.; Staiger, Chad S.; Leonard, Jonathan C.

An iron-based ionic liquid, Fe((OHCH2CH2) 2NH)6(CF3SO3)3, is synthesized in a single-step complexation reaction. Infrared and Raman data suggest NH(CH2CH2OH)2 primarily coordinates to Fe(iii) through alcohol groups. The compound has Tg and Td values of -64°C and 260°C, respectively. Cyclic voltammetry reveals quasi-reversible Fe(iii)/Fe(ii) reduction waves. © 2010 The Royal Society of Chemistry.