Strong hydrogen bonds in the ionic pair (1,3‐diisopropyl‐4,5‐dimethyl‐4‐imidazolin‐2‐yl­idene)ammonium trichloro­(1,3‐diisopropyl‐4,5‐dimethyl‐4‐imidazolin‐2‐ylideneamine)­iron(II)

The title compound, (C₁₁H₂₂N₃)FeCl₃(C₁₁H₂₁N₃)], is one of the rare examples where an isolated ionic pair of the type A]ⁿ⁺EMX₃]^n? (E is any non‐metal, M is any transition metal and X is any halogen) could be structurally characterized. Two short N—H?Cl contacts between the two ammonium H atoms and two of the three Cl atoms of the counter‐anion generate a six‐membered ring. The third Cl atom is involved in a weaker intra­molecular hydrogen bond to the neutral 1,3‐diisopropyl‐4,5‐dimethyl‐4‐imidazolin‐2‐yl­idene­amine ligand.