Poly[[(μ2-4,4′-bipyridyl-κ2N:N′)bis{μ2-N-[2-(2-hydroxybenzoyl)carbamothioyl]acetamidato-κ4O,N,O′:S}bis(nitrato-κ2O,O′)dicadmium] dimethylformamide tetrasolvate]

Abstract

The asymmetric unit of the title complex, {[Cd2(C10H10N3O3S)2(C10H8N2)(NO3)2]·4C3H7NO}n, consists of one CdIIcation, oneN-[2-(2-hydroxybenzoyl)carbamothioyl]acetamidate ligand, half a 4,4′-bipyridyl ligand, one coordinating nitrate anion and two dimethylformamide solvent molecules of crystallization. The bipyridine ligand is completed by inversion symmetry. The metal cation exhibits a distorted pentagonal–bipyramidal coordination geometry provided by two O and one N atoms of the thiosemicarbazide ligand, two O atoms of the nitrate anion, one S atom of a neighbouring thiosemicarbazide ligand and one 4,4′-bipyridine N atom. The bridging role of the thiosemicarbazide ligand through the S atom leads to centrosymmetric binuclear units, which are further linked by 4,4′-bipyridine units, forming polymeric chains extending along theb-axis direction. An intramolecular N—H...O hydrogen bond occurs. The crystal structure also features N—H...O and O—H...O hydrogen bonds, leading to the formation of a three-dimensional network.