Tetrakis(diethylenetriammonium) tris[hexacyanoferrate(II)] octahydrate

# 2006 International Union of Crystallography All rights reserved The asymmetric unit of the title complex, (C4H16N3)4[Fe(CN)6]3 8H2O, comprises two [H3N(CH2)2NH2(CH2)2NH3] 3+ cations, 1.5 octahedral [Fe(CN)6] 4 anions and four solvent water molecules; one anion is located on a center of inversion. Extensive hydrogen bonding of the types O— H O, N and N—H N, involving all components of the structure, leads to a three-dimensional array.