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.
Petrovic
Dejan
D
Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany.
Tamm
Matthias
M
Herdtweck
Eberhardt
E