[EMIM][TFSI]@FeBTC composite did not exhibit an ordering transition similar to the one observed for [EMIM][TFSI]@CuBTC before thermal decomposition according the DSC (Figure (1-butyl-3-methylimidazolium hexafluorophosphate). These specific candidates were selected so as to probe the effect of anion and cation species of the IL for possible interaction with the metal center in CuBTC.