{Tris[2-(imidazol-2-ylmethyl­imino)eth­yl]methyl­ammonium}iron(II) tris­(per­chlorate) dihydrate

The title complex, [Fe(C(19)H(27)N(10))](ClO(4))(3)·2H(2)O, is a new polymorph of an iron(II) Schiff base complex of tris­(2-amino­ethyl)methyl­ammonium with imidazole-2-carboxaldehyde. The octa­hedral Fe(II) atom is bound to three facial imidazole N atoms with average Fe—N(imidazole) and Fe—N(imine) bond distances of 1.963 (5) and 1.951 (5) Å, respectively. The central N atom of the tripodal ligand is outside the bonding distance at 3.92 Å. The crystal packing is stabilized by the hydrogen-bonding inter­actions between the two water mol­ecules (acceptor) and two of the three imidazole NH groups (donor). The third imidazole NH group (donor) forms a hydrogen bond to one of the three perchlorate counter-ions (acceptor).