The reaction of cobalt halides with N-arylsalicylideneimines

Bamfield, Peter

doi:10.1039/j19670000804

Cited by 28 publications

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“…This indicates that the azomethine groups were highly affected by complexation. For the free ligands L 1 H and L 2 H, the bands at 1157 and 1080 cm −1 , respectively can be attributed to the phenolic group vibration [16]. In the metal complexes, these bands are shifted to lower frequencies (1074-1082 cm −1 ) for L 1 H and higher frequencies (1099-1105 cm −1 ) for L 2 H, indicating coordination of oxygen to the metal atoms.…”

Section: Resultsmentioning

confidence: 95%

Salicylaldehyde thiazolyl hydrazones as ligands

Yılmaz

Çukurovalı

2003

Heteroatom Chemistry

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Novel bidentate Schiff base ligands, 2‐(2‐hydroxy‐5‐chloro/nitro)benzaldehyde‐[4‐(3‐methyl‐3‐mesitylcyclobutyl)‐1,3‐thiazol‐2‐yl]hydrazone, and their metal complexes have been prepared and characterized by elemental analyses, IR, 13C and 1H NMR spectra, and magnetic susceptibility measurements. All the complexes were found to be mononuclear. © 2003 Wiley Periodicals, Inc. Heteroatom Chem 14:617–621, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.10201

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Section: Resultsmentioning

confidence: 95%

Salicylaldehyde thiazolyl hydrazones as ligands

Yılmaz

Çukurovalı

2003

Heteroatom Chemistry

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“…For DMIIMBD, two medium intensity bands at 3416 and 3325 cm À1 are due to stretch of the phenolic OH and the second OH para with respect to the phenolic OH. A medium intensity band at 1293 to 1164 cm À1 due to phenolic υC-O shifted to higher or lower frequency by 8-23 cm À1 in the complexes, suggesting participation of the oxygen of the hydroxyl in bonding [27,28]. Shifts are due to coordination of ligand to copper by the azomethine nitrogen and phenolic oxygen.…”

Section: Characterization Of Metal Complexesmentioning

confidence: 88%

Synthesis, crystal structure, spectroscopic, and biological studies on Cu(II) complexes of N,O donor dimethyl isoxazole Schiff bases

Chityala

Kumar

Subhashini

et al. 2013

Journal of Coordination Chemistry

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Cu(II) complexes with Schiff bases DMIIMP, DMIIMBD, DMIIMBP, DMIIMCP, DMIIMMP, and DMIIMNP (see Introduction for definitions) are derived from condensation of 3,4-dimethyl 5-amino-isoxazole with salicylaldehyde and substituted salicylaldehydes. The newly synthesized ligands were characterized by IR, UV-Vis, 1 H NMR, 13 C NMR, mass spectra, and elemental analysis. The Cu(II) complexes were characterized by IR, UV-Vis, ESR, elemental analysis, magnetic moments, thermogram, DTA, and single crystal analysis. The complexes have general formula [M (L) 2 ]. The Schiff bases are bidentate coordinating through the azomethine nitrogen and phenolic oxygen of salicylaldehydes. Based on the analytical and spectral data, four-coordinate geometry is assigned for all the complexes. ESR and single crystal analysis suggests square planar geometry for all complexes. [Cu(DMIIMP) 2 ] crystallizes in the orthorhombic system. Antimicrobial studies of Schiff bases and their metal complexes show significant activity with the metal complexes showing more activity than corresponding Schiff bases. Cytotoxicity of the copper complexes on human cervical carcinoma cells (HeLa) was measured using the Methyl Thiazole Tetrazolium assay.

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“…1233-1249 cm À1 due to CAO (phenolic) shift to higher frequency by 15-27 cm À1 in the complexes, indicating coordination of the phenolic oxygen atom to the metal ion [19]. These facts suggest that the shifts are due to coordination of ligand to the metal atom by the azomethine nitrogen and phenolic oxygen [17,20]. Except for the [Cu(L 1 Þ 2 ] complex, all the complexes show a broad diffuse band centered at ca.…”

Section: Resultsmentioning

confidence: 98%

Synthesis and Characterization of Two New Schiff Base Ligands and their Complexes with Cobalt(II), Nickel(II) and Copper(II)

Yazicı

Akgün

2006

Transition Met Chem

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Two Schiff base ligands, 2-fE-[(5-phenyl-6H-1,3,4-thiadiazin-2yl)imino]methyneg-1-naphthol (L 1 H) and 5-nitro-2-f[(5-phenyl-6H-1,3,4-thiadiazin-2-yl)imino]methynegphenol (L 2 H) have been prepared from 5-phenyl-6H-1,3,4-thiadiazin-2-amine ðAÞ, 2-hydroxynaphthaldehyde (1) and 2-hydroxy-5-nitrobenzaldehyde (2) Mononuclear Co(II), Ni II and Cu II complexes of the ligands have been prepared by using Co II , Ni II and Cu II salts with a 1:2 metal:ligand ratio. It was determined that the bidentate behavior of the ligands is accomplished via the phenolic oxygen and the azomethine nitrogen atoms. The structures of the ligands and their complexes were identified by using elemental analyses, i.r., 1 H-n.m.r. spectra, electronic spectra, magnetic susceptibility measurements and thermogravimetric analyses (t.g.a.).

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The reaction of cobalt halides with N-arylsalicylideneimines

Cited by 28 publications

References 0 publications

Salicylaldehyde thiazolyl hydrazones as ligands

Salicylaldehyde thiazolyl hydrazones as ligands

Synthesis, crystal structure, spectroscopic, and biological studies on Cu(II) complexes of N,O donor dimethyl isoxazole Schiff bases

Synthesis and Characterization of Two New Schiff Base Ligands and their Complexes with Cobalt(II), Nickel(II) and Copper(II)

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