6533b838fe1ef96bd12a4e97

RESEARCH PRODUCT

Zinc complexation to N-substituted sulfonamide ligands. Preparation, properties and crystal structure of copper(II) doped ?[Zn(sulfamethizolate)2(py)]·H2O?∞

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Abstract The single crystal structure and spectroscopic properties of the copper(II) doped {[Zn(sulfamethizolate) 2 (py)]·H 2 O} ∞ are reported. The complex is a polymer where the Zn(II) ions are coordinated by four N atoms in a very distorted tetrahedral environment. The sulfamethizolate anion acts as a monodentate ligand through the thiadiazole N atom and as a bridging ligand via the amino and thiadiazole N atoms. The compound is studied by EPR, by 13 C NMR in solid state and by 1 H and 13 C NMR in DMSO-d 6 solution. The similarity between the 13 C NMR spectrum in solution and the solid 13 C NMR spectrum indicates that the structure of the compound remains in solution. The EPR spectrum shows the presence of two different environments for the Cu(II) ions.