Abstract
In the title compound, (2,2'-bi-pyridine-κ2 N,N')bis-(2-meth-oxy-ethyl xanthato-κS)zinc(II), [Zn(C4H7O2S2)2(C10H8N2)], the ZnII ion is coordinated to two N atoms of the 2,2'-bi-pyridine ligand and two S atoms from two 2-meth-oxy-ethyl xanthate ligands. The ZnII ion lies on a crystallographic twofold rotation axis and has distorted tetra-hedral coordination geometry. In the crystal, mol-ecules are linked by weak C-H⋯O hydrogen bonds, forming supramolecular chains propagating along the a-axis direction. Weak intra-molecular C-H⋯S hydrogen bonds are also observed. The inter-molecular contacts in the crystal were further analysed using Hirshfield surface analysis, which indicates that the most significant contacts are H⋯H (36.3%), followed by S⋯H/H⋯S (24.7%), C⋯H/H⋯C (15.1%), O⋯H/H⋯O (14.4%), N⋯H/H⋯N (4.1%) and C⋯C (2.9%).
Highlights
Xanthates have attracted the attention of scientific groups of researchers due to their diverse applications
It was reported that metal xanthates have cytotoxic activity on human cancer cells (Efrima et al, 2003; Friebolin et al, 2005)
The ZnII ion is coordinated to two N atoms of the 2,20-bipyridine ligand and two S atoms from two 2-methoxyethyl xanthate ligands in a distorted tetrahedral environment and lies on a crystallographic twofold rotation axis
Summary
Xanthates (dithiocarbonates, ROCS2À) have attracted the attention of scientific groups of researchers due to their diverse applications. It was reported that metal xanthates have cytotoxic activity on human cancer cells (Efrima et al, 2003; Friebolin et al, 2005). Zinc(II) xanthate complexes have a tetrahedral geometry, while zinc(II) xanthate complexes with neutral bidentate nitrogen donor ligands are either strongly distorted octahedral or tetrahedral. ZnII 2-methoxyethylxanthate with N,N,N0,N0-tetramethylethylenediamine was synthesized, structurally characterized and studied by density functional theory (Qadir et al, 2019). The complex showed a tetrahedral environment around metal center and the HOMO–LUMO band gap was 3.9 eV. Aromatic heterocyclic nitrogen donor ligands have been used by researchers to prepare mixed-ligand complexes of transition metals with supramoleculer architectures. The synthesis and crystal structure of a zinc(II) 2-methoxyethyl xanthate involving 2,20-bipyridine is reported.
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