Crystal structure and Hirshfeld surface analysis of tris­(acetohydrazide-κ(2) N,O)(nitrato-κO)(nitrato-κ(2) O,O′)terbium(III) nitrate

In the title lanthanide(III) compound, [Tb(NO(3))(2)(C(2)H(6)N(2)O)(3)]NO(3), the asym­metric unit contains one Tb(3+) ion, three acetohydrazide (C(2)H(6)N(2)O) ligands, two coordinated nitrate anions, and an isolated nitrate anion. The Tb(3+) 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.