Copper(ii), Cobalt(iii), Nickel(ii), Palladium(ii), and Zinc(ii) Complexes of the Schiff Base Ligands Derived From 2,6-Diacetylpyridine and Phthaldialdehyde

Köksal, Hüseyin; Dolaz, Mustafa; Tümer, Mehmet; Serın, Selahattın

doi:10.1081/sim-100106854

Cited by 46 publications

(15 citation statements)

References 23 publications

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“…The effective magnetic moment of ( 1 ) is (4.80 BM) as in some of the reported high‐spin cobalt(II) complexes. This is because the orbital contribution to the spin‐only value (3.87 BM) is fairly small, may be due to the presence of a low symmetry ligand field component with tetrahedrally distortion . Cobalt(II) complex ( 1 ) displays electronic absorption bands at 498, 632 and 695 nm, assigned to 4 A 2 ’(F) → 4 A 2 ’(P), 4 A 2 ́’(F) → 4 E”(P) and 4 A 2 ́’(F) → 4 E'(F) transitions, respectively.…”

Section: Resultsmentioning

confidence: 99%

Structural characterization, thermal investigation and biological activity of metal complexes containing Schiff Base ligand (Z)‐3‐(1‐((4,6‐dimethyl‐1H‐pyrazolo[3,4‐b] pyridin‐3‐yl)imino)ethyl)‐4‐hydroxy‐6‐methyl‐2H‐pyran‐2‐one

Emam

Abouel‐Enein

Abdel‐Satar

2019

Applied Organom Chemis

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A new series of metal complexes containing Co(II), Pd(II), Fe(III) chloride and Cu(II) salts (chloride, bromide, sulphate and perchlorate) have been prepared with Schiff base ligand (HL). The synthesized compounds were elucidated using elemental analyses, spectral techniques, molar conductance, magnetic measurements and thermogravimetric studies. The analytical data established (1 M:1 L) stoichiometry for complexes (1), (2), (4), (6) and (7) as well as (1 M:2 L) and (2 M:3 L) stoichiometry for complexes (5) and (3), respectively. As a result, the ligand HL coordinates in complexes (1), (2), (4), (6) as a monobasic tridentate ONN moiety via the oxygen atom of the deprotonated phenolic OH, the nitrogen atoms of the azomethine and the imine group in pyrazolopyridine ring. While, it behaves as a neutral bidentate in complexes (3,7), chelates via oxygen and nitrogen atoms of enolic OH and azomethine groups. Also, in complex (5) Cu2+ ion binds via NO sits of two ligand molecules in its monobasic and neutral forms. The magnetic moment and electronic spectral data proposed octahedral structure for complexes (2, 3 and 7) as well as triagonal bipyramidal and square pyramidal geometry for complexes (1 and 4), while, chelates (5) and (6) possess square planar geometry. TG/DTG studies confirmed the chemical formula for these complexes and established the thermal decomposition processes ended with the formation of metal or metal oxides contaminated with carbon residue. An axial electron spin resonance spectra were suggested for Cu(II) complexes pointing to 2B1g as a ground state with hyperfine structure for complex (4). In vitro antibacterial and antioxidant activities were performed for HL ligand and its metal complexes. The biological studies indicate that complex (3) has better antibacterial activity compared to the ligand and the other complexes.

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Section: Resultsmentioning

confidence: 99%

Structural characterization, thermal investigation and biological activity of metal complexes containing Schiff Base ligand (Z)‐3‐(1‐((4,6‐dimethyl‐1H‐pyrazolo[3,4‐b] pyridin‐3‐yl)imino)ethyl)‐4‐hydroxy‐6‐methyl‐2H‐pyran‐2‐one

Emam

Abouel‐Enein

Abdel‐Satar

2019

Applied Organom Chemis

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“…The use of this mixed solvent has some advantages over pure DMSO. Thus, pure DMSO is very hygroscopic and controlling its water content is difficult [61]. This fact would affect reproducibility of our experiment.…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

Synthesis, spectral characterization, solution equilibria, in vitro antibacterial and cytotoxic activities of Cu(II), Ni(II), Mn(II), Co(II) and Zn(II) complexes with Schiff base derived from 5-bromosalicylaldehyde and 2-aminomethylthiophene

El‐Sherif

Eldebss

2011

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

142

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“…The magnetic moments value of the Mn(II) coordination polymer is 5.67 B.M. These values are within the limits for Mn(II) species with spin-free five unpaired electrons and indicate that the new coordination polymers are high-spin d5-systems, presumably with octahedral geometry [34]. The magnetic moments of the two Cu(II) coordination polymers are 1.93 B.M.…”

Section: Magnetic Measurementsmentioning

confidence: 88%

Polymeric Coordination Compounds Derived from Transition Metal (II) with Bis-dentate Ligand: Synthesis, Spectroscopic, Magnetic and Thermal Studies

Patel

2012

International Journal of Polymeric Materials

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Polymeric compounds have been synthesized using the ligand [(5,5 0 -(3,3 0 -((4-Hydroxyphenyl)methylene)bis(1H-indole-3,1-diyl)bis(methylene)diquinolin-8-ol)](HMBIQ) with Mn(II), Co(II), Ni(II), Cu(II), and Zn(II). The ligand has been characterized by 1 H and 13 C-NMR spectroscopy. The coordination polymers have been characterized by elemental analyses, magnetic measurements, thermogravimetric analyses, electronic and infrared spectra. The coordination compounds are colored and the central metal ions are octahedrally coordinated with two water molecules and the ligand. The polymers are insoluble in all common organic solvents such as acetone, methanol, ethanol, DMF, and DMSO.

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Copper(ii), Cobalt(iii), Nickel(ii), Palladium(ii), and Zinc(ii) Complexes of the Schiff Base Ligands Derived From 2,6-Diacetylpyridine and Phthaldialdehyde

Cited by 46 publications

References 23 publications

Structural characterization, thermal investigation and biological activity of metal complexes containing Schiff Base ligand (Z)‐3‐(1‐((4,6‐dimethyl‐1H‐pyrazolo[3,4‐b] pyridin‐3‐yl)imino)ethyl)‐4‐hydroxy‐6‐methyl‐2H‐pyran‐2‐one

Structural characterization, thermal investigation and biological activity of metal complexes containing Schiff Base ligand (Z)‐3‐(1‐((4,6‐dimethyl‐1H‐pyrazolo[3,4‐b] pyridin‐3‐yl)imino)ethyl)‐4‐hydroxy‐6‐methyl‐2H‐pyran‐2‐one

Synthesis, spectral characterization, solution equilibria, in vitro antibacterial and cytotoxic activities of Cu(II), Ni(II), Mn(II), Co(II) and Zn(II) complexes with Schiff base derived from 5-bromosalicylaldehyde and 2-aminomethylthiophene

Polymeric Coordination Compounds Derived from Transition Metal (II) with Bis-dentate Ligand: Synthesis, Spectroscopic, Magnetic and Thermal Studies

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