Crystal structure and magnetic properties of (tris­{4-[1-(2-meth­oxy­eth­yl)imidazol-2-yl]-3-aza­but-3-enyl}amine)­iron(II) bis­(hexa­fluorido­phosphate)

In the complex cation of the title compound, [Fe(C(27)H(41)N(10)O(3))](PF(6))(2), the tripodal tris­{4-[1-(2-meth­oxy­eth­yl)imidazol-2-yl]-3-aza­but-3-en­yl}amine ligand is coordinated to an Fe(II) ion through the nitro­gen atoms of three imidazole and three imino groups. The Fe atom exhibits a distorted octa­hedral geometry. In the crystal, l and d anti­podes are arranged in layers in the bc plane. Weak C⋯F and C—H⋯F/O contacts exist between the ligands of the complex cation and the PF(6) (−) anions, generating a three-dimensional network. At 120 K, the Fe(II) ion is in a low-spin state, with an average Fe—N bond distance of 1.970 (2) Å. On heating, the Fe(II) ion converts to the high-spin state, as demonstrated by magnetic susceptibility measurements.