SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF N- COMPLEXES. X-RAY CRYSTAL STRUCTURE OF HL

• Published in: Bulletin of the Chemical Society of Ethiopia Vol. 32; no. 1; p. 111
• Main Authors: Khan, Rasool, Tavman, Aydin, Gurbuz, Demet, Arfan, Mohammad, Cinarli, Adem
• Format: Journal Article
• Language: English
• Published: Chemical Society of Ethiopia 01-01-2018
• Subjects: Amides; Chemical properties; Chemical synthesis; Crystal structure; Methods; Observations; Production processes
• ISSN: 1011-3924
• DOI: 10.4314/bcse.v32i1.10

N-(2-{[(2E)-2-(2-hydroxybenzylidene)hydrazinyl]carbonyl}phenyl)benzamide (HL) and its Co(II), Fe(III), Cu(II) and Zn(II) perchlorate complexes were synthesized. The structures of HL and its complexes were confirmed on the basis of elemental analysis and FT-IR, FT-Raman, [.sup.1]H-NMR spectra. TGA, magnetic moment and molar conductivity measurements were carried out for the complexes. In addition, the crystal structure of HL was determined by X-ray diffraction at room temperature. It crystallizes in the monoclinic, space group C2/c and Z=4. HL has an interesting structure due to the presence of two intramolecular hydrogen bonds. It behaves as a bidentate ligand through the C=N nitrogen and OH oxygen atoms in its chelate complexes that they have 1:2 M:L (metal:ligand) ratio. The Fe(III), Cu(II) and Zn(II) complexes, [Fe(HL)(L)[([H.sub.2]O).sub.2]][(Cl[O.sub.4]).sub.2], [Cu[(HL).sub.2]][(Cl[O.sub.4]).sub.2]*3[H.sub.2]O, [Zn[(HL).sub.2]][(Cl[O.sub.4]).sub.2]*[H.sub.2]O are 2:1 electrolytes whereas the Co(II) complex, [Co(HL)(L)([H.sub.2]O)]Cl[O.sub.4]*[H.sub.2]O, is 1:1 electrolyte according to the molar conductivity data. KEY WORDS: Hydrazine, Hydroxybenzylidene, Benzamide, Metal Complexes, Crystal Structure