Crystal structure of diaquatris(benzohydrazide-κ² N,O)(isophthalato-κO)samarium(III) nitrate

Abstract

The first benzohydrazide complex of a lanthanide is reported. The SmIII ion is nine-coordinated in a distorted tricapped trigonal–prismatic geometry by three oxygen atoms and three nitro­gen atoms from three benzhydrazide (bzz) ligands, one oxygen atom from the isophthalate (itp2−) ligand, and two oxygen atoms from coordinated water mol­ecules. The crystal structure features extensive hydrogen bonding as well as C—H⋯π and π–π inter­actions.

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

“…A ConQuest search of the Cambridge Structural Database (CSD, Version 5.42, September 2021 update; Bruno et al, 2002;Groom et al, 2016) for the structures of lanthanide complexes with acetohydrazide ligands gave ten hits, viz. Er [CECLEB (Pangani et al, 1983), CECLEB10 (Agre et al, 1984)], Dy [CECLIF (Pangani et al, 1983), CECLIF10 ], Ho [CECLOL (Pangani et al, 1983), CECLOL10 ], Pr (CUWFAB; Pangani, Machhoshvili et al, 1984), Gd (FOYGIM; Branda ˜o et al, 2020), and Sm [ISNHSM (Zinner et al, 1979), QITBIH (Theppitak et al, 2018)]. In all of these complexes, the acetohydrazide ligand adopts a 2 -1 : 1 bidentate chelating coordination mode to bind the lanthanide(III) ion and the amine NH moiety of the acetohydrazide ligand can act as a donor site for intermolecular hydrogen-bonding interactions, similar to that of the title compound.…”