Tris(2,2′-bipyridine)­copper(II) penta­cyanido­nitro­soferrate(II) methanol disolvate monohydrate

The title complex [Cu(C₁₀H₈N₂)₃][Fe(CN)₅(NO)]·2CH₃OH·H₂O, consists of discrete [Cu(bpy)₃]²⁺ cations (bpy is 2,2′-bipyridine), [Fe(CN)₅NO]²⁻ anions and solvent mol­ecules of crystallization (two methanol mol­ecules and one water mol­ecules per asymmetric unit). The Cu^II ion adopts a distorted octa­hedral environment, coordinated by six N atoms from three bpy ligands. The cation charge is balanced by a nitro­prusside counter-anion, which has a slightly distorted octa­hedral coordination geometry. In the crystal, anions and solvent mol­ecules are involved in O—H...N and O—H...O hydrogen bonds, which form chains along [100]. The cations are located between these chains.

Bis[chloridobis(1,10-phenanthroline)copper(II)] penta­cyanido­nitro­soferrate(II) di­methyl­formamide monosolvate

The title complex [CuCl(C₁₂H₈N₂)₂]₂[Fe(CN)₅(NO)]·C₃H₇NO, consists of discrete [Cu(phen)₂Cl]⁺ cations (phen is 1,10-phenanthroline), [Fe(CN)₅NO]²⁻ anions and one di­methyl­formamide (DMF) solvent mol­ecule of crystallization per asymmetric unit. The Cu^II atom is coordinated by two phenanthroline ligands and one chloride ion in a distorted trigonal–bipyramidal geometry. The dihedral angle between the phen ligands is 77.92 (7)°. The cation charge is balanced by a disordered nitro­prusside counter-anion with the Fe^II atom located on an inversion center with a slightly distorted octa­hedral coordination geometry. In the crystal, weak C—H...N and C—H...Cl hydrogen bonds connect anions and cations into a two-dimensional network parallel to (100). In addition, π–π stacking inter­actions are observed with centroid–centroid distances in the range 3.565 (2)–3.760 (3)Å. The di­methyl­formamide solvent mol­ecule was refined as disordered about an inversion center.

Bis(2,9-dimethyl-1,10-phenanthroline)copper(I) penta­cyanido­nitro­soferrate(II)

The asymmetric unit of the title complex [Cu(C₁₄H₁₂N₂)₂]₂[Fe(CN)₅(NO)], consists of a [Cu(dmp)₂]⁺ cation (dmp is 2,9-dimethyl-1,10-phenanthroline) and half an [Fe(CN)₅(NO)]²⁻ anion. The anion is disordered across an inversion center with the Fe^II ion slightly offset (ca 0.205Å) from the inversion center in the direction of the disordered trans-coordinating CN/NO ligands. The anion has a distorted octa­hedral coordination geometry. The Cu^I ion is coordinated by two phenanthroline ligands in a distorted tetra­hedral geometry. The dihedral angle between the phenanthroline ligands is 77.16 (4) Å. In the crystal, the cations are connected to the anions by weak C—H...N hydrogen bonds. In addition, weak π–π stacking inter­actions are observed, with centroid–centroid distances in the range 3.512 (3)–3.859 (3) Å.