SYNTHESIS AND SPECTROSCOPIC CHARACTERIZATION OF BIDENTATE SCHIFF BASE AND ZINC(II) COMPLEX

Abstract

A new asymmetric bidentate Schiff base ligand was synthesized from 4-Methoxysalicylaldehyde. The complex was prepared by adding Zn(II) acetate salt dissolved in methanol to the Schiff base ligand. The ligand and its metal complex were characterized by elemental analysis (CHN), FT-IR, UV-Vis spectroscopy, 1H NMR, TG/DTG, SEM and conductometric measurements. The spectroscopic data reveals that the Zn(II) atom in the center of the complex is four-coordinated by two phenolic oxygen atoms and two azomethine nitrogen atoms of two Schiff base ligands. The Zn(II) complex is diamagnetic as expected for d10 metal ions in a tetrahedral geometry. The Zn(II) complex is soluble in DMSO and DMF and is insoluble in acetone, chloroform, ethanol and methanol. The conductance data indicate that the complex is non-electrolytes.

Keywords

• Schiff base
• Zinc(II) complexes
• IR analysis
• Thermogravimetric analysis

Supporting Institution

Niğde Ömer Halisdemir University Scientific Research Projects Coordinator

Project Number

FEB 2011/02-BAGEP

Thanks

The work was supported by Niğde Ömer Halisdemir University Scientific Research Projects Coordinator (FEB 2011/02-BAGEP).

References

1. REFERENCES [1] H. Schiff, “Untersuchungen über salicinderivate,” Annalen der Chem. Vol. 150, no. 2, Feb., pp. 193-200, 1869.
2. [2] J. Y. Al-Humaidi, “In situ alkaline media: Synthesis, spectroscopic, morphology and anticancer assignments of some transition metal ion complexes of 1-((2-aminophenylimino) methyl) naphthalen-2-ol Schiff base,” Journal of Molecular Structure, vol. 1183, May., pp. 190-201, 2019.
3. [3] R. Reddy, Trivedi, B. S. Kumar, K. Sirisha, A.V. Sarma, B. Sridhar, and R. S. Prakasham, “Synthesis, characterization and antimicrobial activity of novel Schiff base tethered boronate esters of 1,2-O-isopropylidene-α-D-xylofuranose,” Bioorg. Med. Chem. Lett. Vol. 26, no.15, Aug., pp. 3447-3452, 2016.
4. [4] I. Gönül, M. Köse, G. Ceyhan, and S. Serin, “Methoxy group containing bidentate Schiff base ligands and their transition metal complexes: Synthesis, structural characterization, photoluminescence, antioxidant capacity and superoxide dismutase activity studies,” Inorganica Chimica Acta, vol. 453, Nov., pp. 522-530, 2016.
5. [5] M. Mokhles, “Spectroscopic Characterization of Some Tetradentate Schiff Bases and Their Complexes with Nickel, Copper and Zinc,” Journal of the Chinese Chemical Society, vol. 48, no. 2, Apr., pp. 153-158, 2001.
6. [6] M. Kumar, S. Roy, M. S. H. Faizi, S. Kumar, M. K. Singh, S. Kishor, S. C. Peter, and R. P. John, “Synthesis, crystal structure and luminescence properties of acenaphthene benzohydrazide based ligand and its zinc (II) complex.” Journal of Molecular Structure, vol. 1128, Jan., pp. 195-204, 2017.
7. [7] S. Ucan, A. Öztürk, N. Sarıkavaklı, and T. Hökelek, “4-Methoxy-2-[(E)-(phenylimino) methyl] phenol. Acta Crystallographica Section E: Structure Reports Online, vol. 64, no. 9, Sep., pp. o1818-o1819, 2008.
8. [8] S. Y. Ucan, “Synthesis, spectral, thermal, and magnetic studies of cobalt (II), nickel (II), copper (II), zinc (II), and cadmium (II) complexes with N2O2 donor groups,” Russian Journal of General Chemistry, vol. 84, no. 9, Oct., pp. 1819-1824, 2014.

9. [9] A. Kakanejadifard, F. Esna-ashari, P. Hashemi, and A. Zabardasti, “Synthesis and characterization of an azo dibenzoic acid Schiff base and its Ni (II), Pb (II), Zn (II) and Cd (II) complexes,” Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 106, Apr., pp. 80-85, 2013.
10. [10] M. Khorshidifard, H. Amirirudbari, B. Banafshe Askari, M. Mehdisahihi, M. Riahifarsani, F. Faribajalilian, and G. Giuseppebruno, “Cobalt(II), Copper(II), Zinc(II) and Palladium(II) Schiff Base Complexes: Synthesis, Characterization and Catalytic Performance in Selective Oxidation of Sulfides Using Hydrogen Peroxide under Solvent-Free Conditions,” Polyhedron, vol. 95, Apr., pp. 1-13, 2015.
11. [11] M. Mohammadikish, “Green synthesis and growth mechanism of new nanomaterial: Zn(salen) nano-complex,” Journal of Crystal Growth, vol. 431, Dec., pp. 39-48, 2015.
12. [12] J. C. Pessoa, and I. Correia, “Salan vs. salen metal complexes in catalysis and medicinal applications: Virtues and pitfalls,” Coordination Chemistry Reviews, vol. 388, Jun., pp. 227-247, 2019.
13. [13] B. Hamide, Gr. Gholamhossein, E. Vaclav, D. Michal, and D. K. Aliakbar, “Copper (II), nickel (II), zinc (II) and vanadium (IV) Schiff base complexes: Synthesis, characterization, crystal structure determination, and thermal studies,” Polyhedron, vol. 146, May., pp. 19-25, 2018.
14. [14] T. N. Rahmouni, N. H. Bensiradj, S. A. Megatli, S. Djebbar, and O. B. Baitich, “New mixed amino acids complexes of iron (III) and zinc (II) with isonitrosoacetophenone: Synthesis, spectral characterization, DFT study and anticancer activity,” Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 213, Apr., pp. 235-248, 2019.
15. [15] B. Mohan, A. Jana, N. Das, S. Bharti, and M. Choudhary, “Syntheses, crystal structures, antioxidant SOD-like properties and in-vitro antimicrobial studies of Cu (II) and Ni (II) complexes with 2-((E)-(4-bromo-2-chloro-phenylimino) methyl)-6-bromo-4-nitrophenol and (E)-1-(3,5-dichloro-2-hydroxybenzylidene)-4, 4-dimethylthiosemi-carbazide,” Journal of Molecular Structure, vol. 1171, Nov., pp. 94-109, 2018.