Title of article :
Crystal structure and magnetic properties of bis[butyltris(1H-pyrazol-1-yl)borato]iron(II)
Author/Authors :
Seredyuk, Maksym Department of Chemistry - Taras Shevchenko National University of Kyiv, Ukraine , Znovjyak, Kateryna Department of Chemistry - Taras Shevchenko National University of Kyiv, Ukraine , Fritsky, Igor O. Department of Chemistry - Taras Shevchenko National University of Kyiv, Ukraine , Sliva, Tatiana Y. Department of Chemistry - Taras Shevchenko National University of Kyiv, Ukraine , Slobodyanik, Mykola S. Department of Chemistry - Taras Shevchenko National University of Kyiv, Ukraine
Abstract :
The asymmetric unit of the title compound, [Fe(C13H18BN6)2], contains two half independent complex molecules. In each complex, the FeII atom is located on an inversion center and is surrounded by two scorpionate ligand butyltris(1H-pyrazol-1-yl)borate molecules that coordinate to the iron(II) ion through the N atoms of the pyrazole groups. The two independent complex molecules differ essentially in the conformation of the butyl substituents. In the crystal, the complex molecules are linked by a series of C—H⋯π interactions, which generate a supramolecular 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.
Keywords :
crystal structure , polypyrazolyl borate , iron(II) scorpionates , magnetism , C—H⋯π interactions
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
