Synthesis and Structure of Iron(II) Complex Compounds with 1-Methyl-2-Pyridine-2-yl-1- and 1-Methyl-2-Phenyliminomethyl-1-Benzimidazoles and Boron Cluster Anions [BH] ( = 10, 12)

The paper studies reactions of iron(II) complexation with benzimidazole derivatives L (L = CNH, L = CNH) in the presence of salts of boron cluster anions [BH] ( = 10, 12). The obtained complex compounds of the general formula [FeL][BH] are characterized by elemental analysis and IR spectroscopy. The structure of complex [FeL][BH] is determined by single-crystal X-ray diffraction (CCDC № 2432134). The distorted octahedral environment of the Fe atom is formed by the imidazole and pyridine N atoms of three L molecules. In the crystal, the [FeL] complex has a meridional configuration. The Fe-N bond lengths for imidazolium nitrogen atoms are in the range of 1.954(8)-1.980(6) Å, and for pyridine nitrogen atoms 1.977(7)-2.011(8) Å.