Abstract
The asymmetric unit of the title compound, [Fe(C(13)H(18)BN(6))(2)], contains two half independent complex mol-ecules. In each complex, the Fe(II) atom is located on an inversion center and is surrounded by two scorpionate ligand butyl-tris-(1H-pyrazol-1-yl)borate mol-ecules that coordinate to the iron(II) ion through the N atoms of the pyrazole groups. The two independent complex mol-ecules differ essentially in the conformation of the butyl substituents. In the crystal, the complex mol-ecules are linked by a series of C-H⋯π inter-actions, which generate a supra-molecular three-dimensional structure. At 120 K, the average Fe-N bond distance is 1.969 Å, indicating the low-spin state of the iron(II) atom, which does not change upon heating, as demonstrated by high-temperature magnetic susceptibility measurements.