An iron(ii) complex featuring κ3 and labile κ2-bound PNP pincer ligands – striking differences between CH2 and NH spacers†
Abstract
Treatment of anhydrous FeCl2 with 2 equiv. of the pincer ligand PNP-Ph afforded the diamagnetic cationic octahedral complex [Fe(κ3-P,N,P-PNP)(κ2-P,N-PNP)Cl]+ featuring a κ2-P,N-bound PNP ligand. Preliminary reactivity studies revealed that the κ2-P,N-bound PNP ligand is labile reacting with CO to afford trans-[Fe(PNP-Ph)(CO)2Cl]+.