Abstract
In the title compound, [ZnBr2(C22H19ClN4O)], the ZnII atom adopts a distorted square-pyramidal coordination geometry, formed by two bromido ligands and three N atoms of the bis-(pyridin-2-ylmeth-yl)amine moiety in the penta-dentate ligand containing quinolinol. The ZnII atom is located well above the mean basal plane of the square-based pyramid. The apical position is occupied by a Br atom. The O and N atoms of the quinolinol moiety in the ligand are not coordinated to the ZnII atom. An intra-molecular O-H⋯N hydrogen bond, generating an S(5) ring motif, stabilizes the mol-ecular structure. In the crystal, the mol-ecules are linked by inter-molecular C-H⋯Br hydrogen bonds, generating ribbon structures containing alternating R 2 2(22) and R 2 2(14) rings. These ribbons are linked through an inter-molecular C-H⋯Br hydrogen bond, forming a two-dimensional network sheet.
Highlights
In the title compound, [ZnBr2(C22H19ClN4O)], the ZnII atom adopts a distorted square-pyramidal coordination geometry, formed by two bromido ligands and three N atoms of the bis(pyridin-2-ylmethyl)amine moiety in the pentadentate ligand containing quinolinol
The O and N atoms of the quinolinol moiety in the ligand are not coordinated to the ZnII atom
The molecules are linked by intermolecular C—HÁ Á ÁBr hydrogen bonds, generating ribbon structures containing alternating R22(22) and R22(14) rings
Summary
8-Quinolinol (Hq) is a notable bidentate ligand and an excellent analytical reagent for the determination of the concentration and separation of metal ions (Medlin, 1960; Eguchi et al, 2019). Hq derivatives and their metal complexes have wide applications in diverse areas such as pharmaceuticals (Lai et al, 2009) and organic light-emitting diodes (Li et al, 2020). Some ZnII complexes with dpa derivatives comprise a binding site for polyphosphates such as diphosphate and adenosine triphosphate, and can act as respective anion sensors (Aoki et al, 2020; Bazany-Rodrıguez et al, 2020). The crystal structure of the respective title compound is reported
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