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The first benzohydrazide complex of a lanthanide is reported. In the title compound, [Sm(C 8 H 4 O 4 )(C 7 H 8 N 2 O) 3 (H 2 O) 2 ]NO 3 , systematic name di-aqua-tris-(benzohydrazide-κ 2  N , O )(isophthalato-κ O )samarium(III) nitrate, the Sm III ion is nine-coordinated in a distorted tricapped trigonal-prismatic geometry by three oxygen atoms and three nitro-gen atoms from three benzhydrazide (bzz) ligands, one oxygen atom from the isophthalate (itp 2- ) ligand, and two oxygen atoms from coordinated water mol-ecules. The nitrate group is disordered over two sets of sites with occupancy factors of 0.310 (17) and 0.690 (17). In the crystal, adjacent mol-ecules are linked into chains via pairs of O-H⋯O and N-H⋯O hydrogen bonds between the carboxyl-ate acceptor and the coordinated water and amine NH 2 donors. Mol-ecules are further stacked by π-π inter-actions involving the benzene ring of the itp 2- ligands, forming double chains that extend in the b -axis direction. These double chains are further linked into a three-dimensional supra-molecular network via hydrogen bonds (O-H⋯O, N-H⋯O and C-H⋯O) between the complex mol-ecule and the nitrate groups along with C-H⋯π and π-π inter-actions involving the benzene rings of the bzz and itp 2- ligands.

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

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