metal-organic compounds
Open access
The title compound, [Fe(C14H12N2)3](C4N3)2, consists of one [Fe(dimephen)3]2+ complex cation (dimephen = 5,6-dimethyl-1,10-phenanthroline) and two uncoordinating tcm anions (tcm = tricyanomethanide). In the complex cation, the FeII atom is coordinated by six N atoms from three chelating dimephen ligands at an average Fe—N distance of 1.963 (4) Å giving a distorted octahedral geometry. The crystal structure is stabilized by weak C—HN hydrogen bonds and CNπ interactions between planar [maximum deviations of 0.024 (3) and 0.015 (3) Å] tcm anions and pyridine rings of dimephen [N2centroid = 3.531 (3) and 3.726 (3) Å; CNcentroid = 96.4 (2) and 97.1 (2)°].
metal-organic compounds
Open access
The title compound, [Cu(NO3)(C12H8N2)2][C(CN)3], is formed of discrete [Cu(NO3)(phen)2]+ complex cations (phen is 1,10-phenanthroline) and C(CN)3− counter-anions. The CuII atom has an asymmetric tetragonal–bipyramidal (4 + 1+1) stereochemistry with a pseudo-C2 symmetry axis bisecting the nitrate ligand and passing through the CuII atom between the two phen ligands. The four N atoms of the phen ligands coordinate to the CuII atom with Cu—N distances in the range 1.974 (2)–2.126 (2) Å, while the two O atoms coordinate at substantially different distances [2.154 (2) and 2.586 (2) Å]. The structure is stabilized by C—HO hydrogen bonds and weak π–π interactions between nearly parallel benzene and pyridine rings of two adjacent phen molecules, with centroid–centroid distances of 3.684 (2) and 3.6111 (2) Å, and between π-electrons of the tricyanomethanide anion and the pyridine or benzene rings [N(ring centroid) distances = 3.553 (3)–3.875 (3) Å].