“…The first mononuclear NHC-Fe(II) halides, Fe(NHC) 2 X 2 , were synthesized in 2000 [11]. Since then, the piano-stool Fe(II) complexes of the type CpFe(CO) 2 (NHC)X [12] and pincer Fe(II)/Fe(III) complexes of Fe(2,6-bis(NHC)pyridine)X n (n = 2 or 3) [13] were reported by Siebert, Guerchais and Gibson et al, respectively. Very recently, binuclear NHC-Fe(II) complexes, [Fe 2 (l-S(CH 2 ) 3 S)(CO) 6Àx (NHC) x (x = 1, 2), were synthesized as bio-inspired derivatives by Capon et al [14].…”