title: Tetra-kis(μ(2)-cyanido-κ(2)C:N)dicyanido-tetra-kis-[tris-(2-amino-eth-yl)amine-κ(3)N,N',N'',N''']tetra-copper(II)iron(II) bis[pentacyanidonitrosoferrate(II)] hexahydrate.
abstract: The asymmetric unit of the title complex, [Cu(4)Fe(CN)(6)(C(6)H(18)N(4))(4)][Fe(CN)(5)(NO)](2)·6H(2)O, comprises a complex [{Cu(tren)CN}(4)Fe(CN)(2)](4+) [tren is tris-(2-amino-eth-yl)amine] cation, which exhibits -1 symmetry with the terminal cyanide ligands oriented trans to each other, and two [Fe(CN)(5)(NO)](2-) nitroprussiate counter-anions. In the crystal, N-H⋯N hydrogen-bonding inter-actions are observed between H atoms on the primary amine groups of the tren ligand and the terminal cyanide groups of the nitro-prussiate counter-ions. The N atom in the terminal CN ligand of the cation is equally disordered over two positions. The structure also contains disordered lattice water mol-ecules. Their contribution was elimin-ated from the refinement using the procedure described by van der Sluis & Spek (1990 ▶).
authors.affiliation: Department of Inorganic Chemistry, Taras Shevchenko National University of Kyiv, 64 Volodymyrska St, Kyiv 01601,  Ukraine ; Department of Inorganic Chemistry II, Ruhr-University Bochum, Universitatstrasse 150, 44801 Bochum,  Germany.
authors.forename: Olesia V
authors.initials: OV
authors.lastname: Kozachuk
authors.forename: Julia A
authors.initials: JA
authors.lastname: Rusanova
authors.forename: Oksana V
authors.initials: OV
authors.lastname: Nesterova
authors.forename: Roman
authors.initials: R
authors.lastname: Zubatyuk
authors.forename: Oleg V
authors.initials: OV
authors.lastname: Shishkin