Iron Pentacarbonyl as a Precursor for Molecule-Based Magnets: Formation of Fe[TCNE]2(Tc= 100 K) and Fe[TCNQ]2(Tc= 35 K) Magnets

Abstract
The reaction of tetracyanoethylene (TCNE) and 7,7,8,8-tetracyano-p-quinodimethane (TCNQ) with Fe(CO)5 leads to formation of magnetically ordered materials of Fe[TCNE]2 (Tc = 100 K) and Fe[TCNQ]2 (Tc = 35 K) composition, respectively. In contrast, the reaction with 1,2-dichloro-5,6-dicyanobenzoquinone (DDQ) leads to a paramagnetic material.