{Tris[4-(1H-pyrazol-3-yl)-3-azabut-3-enyl]amine}iron(II) diperchlorate monohydrate

In the title complex, [Fe(C18H24N10)](ClO4)(2) . H2O, the complex cation adopts a capped trigonal antiprismatic stereochemistry, with a long Fe - amine interaction [2.7468 (16) Angstrom]. The Fe centre in the asymmetric unit is fully high-spin at 100 K. Hydrogen bonding assembles dimeric units, which are then linked by further hydrogen bonding into chains running parallel to the crystallographic a axis.