Tris(1,10-phenanthroline-κ²N,N′)iron(II) bis(1,1-dicyano-2-ethoxy-2-oxoethanide)

Abstract

The title compound, [Fe(C12H8N2)3](C6H5N2O2)2, consists of one [Fe(phen)3]2+ cation (phen = 1,10-phenanthroline) and two 1,1-dicyano-2-eth­oxy-2-oxoethanide anions. Five atoms of the anion are disordered over two positions [site occupancy = 0.521 (13) for the major component]. In the complex cation, the FeII atom is coordinated by six N atoms from three phen ligands in a distorted octa­hedral geometry. Two intra­molecular C—H⋯N hydrogen bonds occur in the complex cation. The crystal structure is mainly stabilized by Coulombic inter­actions. Weak intermolecular C—H⋯N inter­actions are also observed.

Tris(1,10-phenanthroline-κ2N,N′)iron(II) bis(1,1,3,3-tetracyano-2-ethoxypropenide) hemihydrate

“…The average value of dihedral angle between pairs of phenanthroline planes is 82,1(3)°. The carbon-carbon and carbon-nitrogen intra-ring bond lengths agree with those observed in other metal complexes with chelating phen (Hoshina et al, 2000;Aparici Plaza et al, 2007;Cai & Zhan, 2012).…”

“…Comment 1,10-Phenanthroline (phen) is a widely utilized chelating ligand in coordination chemistry and a lot of complexes with phen as a ligand have been reported (Hoshina et al, 2000;Hwang & Ha, 2006;Zhou & Guo, 2007). Recently, Cai et al (2012) has reported the structure of a complex with [Fe(phen) 3 ] 2+ as cation and 1,1-dicyano-2-ethoxy-2-oxoethanide as counter-ion. We report here the synthesis and crystal structure of the title compound, in which a polynitrile anion acts as counter-ion.…”

“…For background to 1,10-phenanthroline as a chelating ligand, see: Hoshina et al (2000); Hwang & Ha (2006); Aparici Plaza et al (2007); Zhou & Guo (2007). For a related structure, see: Cai & Zhan (2012). For further synthetic details, see: Middleton & Engelhardt (1958).…”