As we have reported previously, A appears to be stoichiometrically stable towards HBpin at room temperature. However, with excess HBpin and elevated temperatures (50 °C), an inert dihydride bridged complex was generated. Stoichiometric reactions of complex A with either pyridine or benzonitrile resulted in new mononuclear iron complexes 6 and 7 respectively, which were isolated and crystallographically characterized (Figures and).