Crystal structure and Hirshfeld surface analysis of tris(acetohydrazide-κ² N,O)(nitrato-κO)(nitrato-κ² O,O′)terbium(III) nitrate

Abstract

In the title lanthanide(III) compound, [Tb(NO3)2(C2H6N2O)3]NO3, the asymmetric unit contains one Tb3+ ion, three acetohydrazide (C2H6N2O) ligands, two coordinated nitrate anions, and an isolated nitrate anion. The Tb3+ ion is in a ninefold coordinated distorted tricapped trigonal–prismatic geometry formed by three oxygen atoms and three nitrogen atoms from three different acetohydrazide ligands and three oxygen atoms from two nitrate anions. In the crystal, the complex molecules and the non-coordinated nitrate anions are assembled into a three-dimensional supramolecular architecture through extensive N—H...O hydrogen-bonding interactions between the amine NH groups of the acetohydrazide ligands and the nitrate oxygen atoms. Hirshfeld surface analysis was performed to aid in the visualization of intermolecular contacts.