Abstract
In the title compound, [Cd(C16H16O3)2(C12H8N2)]·4H2O, the Cd ion lies on a twofold rotation axis and is chelated by two monodeprotonated residues of the l-tyrosine-derived ligand (S)-2-[(2-hy-droxy-benz-yl)amino]-3-(4-hy-droxy-phen-yl)propanoic acid (L) in a κ2N,O amino acid chelating mode, exhibiting an (N,N')-trans disposition, and by 1,10-phenanthroline in a κ2N,N' mode. The latter ligand is also located about the twofold rotation axis that bisects the central six-members ring. The phenolic groups remain protonated and non-coordinating and take part as acceptors in the intra-molecular hydrogen bonds with the amino groups of the acido ligands. The Cd ion is six-coordinated in a distorted octa-hedral environment. In the crystal, O-H⋯O hydrogen bonds result in the formation of three-dimensional network structures. The title complex has also been characterized by IR and 1H NMR spectroscopy and DFT studies. The crystal studied was refined as an inversion twin.
Highlights
In the title compound, [Cd(C16H16O3)2(C12H8N2)]Á4H2O, the Cd ion lies on a twofold rotation axis and is chelated by two monodeprotonated residues of the l-tyrosine-derived ligand (S)-2-[(2-hydroxybenzyl)amino]-3-(4-hydroxyphenyl)propanoic acid (L) in a 2N,O amino acid chelating mode, exhibiting an (N,N0)-trans disposition, and by 1,10-phenanthroline in a 2N,N0 mode
O—HÁ Á ÁO hydrogen bonds result in the formation of three-dimensional network structures
In this paper we report the synthesis and structure of a new cadmium complex with an l-tyrosine-derived ligand synthesized by the reduction of a Schiff base precursor
Summary
Schiff bases are widely known as an important class of organic compounds and ligands in coordination chemistry. In recent years they have found applications in the fields of analytical chemistry, medicine and biological processes, displaying antifungal, antibacterial and anticancer activities (Przybylski et al, 2009; Dhar & Taploo, 1982). Such systems are considered important ligands for coordination and supramolecular compounds (Moroz et al, 2012). Symmetry codes: (i) x; y þ 1; z; (ii) y À 1; x; Àz; (iii) y; x þ 1; Àz; (iv) Ày þ 32; x þ 12; z À 14
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