EPR and electronic spectral studies on Co(II), Ni(II) and Cu(II) complexes with a new tetradentate 6N49 macrocyclic ligand and their biological activity

Chandra, Surabhi

doi:10.1016/s1386-1425(03)00401-3

Cited by 7 publications

(9 citation statements)

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“…The conductivity values for all of the investigated complexes are listed in Table . These values were measurably small for ionic complexes of the divalent metal ions . These low conductivity values may be attributed to the presence of chloride ions (if present) in the coordination sphere to a certain extent than ionic association to the metal ions during complex formation and also no white precipitate is formed upon the addition of AgNO 3 .…”

Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, electronic structure, and non‐linear optical properties (NLO) of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) complexes with 5‐phenylazo‐8‐hydroxyquinoline using DFT approach

Abdel‐Latif

Moustafa

2017

Applied Organom Chemis

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5-phenylazo-8-hydroxyquinoline and its newly metal complexes with Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) metal ions have been prepared and characterized using different analytical techniques. The complexes are distorted octahedral binding via one oxygen and nitrogen atoms of the ligand; two/three coordinated water molecules. 1:1 complexes contain one chloride or OH − ion and some complexes have one or two water of hydration whereas 1:2 complexes contain only two coordinated water molecules in their coordination spheres. All complexes behave as neutral in dimethylformamide (DMF). The electronic structure and non-linear optical parameters NLO of the complexes (ML and ML2) are investigated theoretically at the B3LYP/GEN level of theory. The geometries of the studied complexes are non-planner. The calculated E HOMO and E LUMO energies of the studied complexes were used to calculate the global properties; hardness (η), global softness (S) and electronegativity (χ). The total dipole moment (μ tot ), static total and anisotropy of polarizability (α, Δα) and static first hyperpolarizability (β) values were calculated and compared with urea as a reference compound. The studied complexes show promising optical properties.

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Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, electronic structure, and non‐linear optical properties (NLO) of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) complexes with 5‐phenylazo‐8‐hydroxyquinoline using DFT approach

Abdel‐Latif

Moustafa

2017

Applied Organom Chemis

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“…The EPR spectra of the complex [Cu(L)] are found to be isotropic consisting of one 'g' value (2.11) with no appearance of hyperfine structure characteristic of regular geometry. The broad spectral signal could be attributed to super exchange interaction between copper centers in the solid state [19].…”

Section: Epr Spectramentioning

confidence: 97%

“…The redox possibilities of the edifices were described by all around characterized waves. The cyclic voltametric information are given the [18,19] or oxidative humiliation of the ligands [20].…”

Section: Fig 1 Esr Spectra Of the Complex [Cul] E Cyclic Voltametrmentioning

confidence: 99%

Transition Metal Schiff Base Complexes Synthesis, Spectral Examination and used as a Catalyst in the Oxidation of Alcohols and C-C Coupling Reactions

2019

IJITEE

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In this correspondence, it reveals the formation of Co (II) and Cu (II) complexes consists of a Schiff base ligand having the four donar destinations 2NO. Co(II) and Cu(II) complexes were made ready by the response of 1:1 proportion of the MCl2 .6H2O (M = Co/Cu) with a Schiff base ligand prepared by the response of 2-hydroxynaphthaldehyde with orthophenylene diamine in ethanolic medium having the stoichimetric proportion of 2:1. The purged and arranged complexes were analytically explored. Catalytic efficacy was assessed for oxidation of alcohols and C-C coupling responses.

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“…The nature of graph of magnetic susceptibility: χ = M/H with a slope of 1.967 × 10 −7 , reveals that complex possesses paramagnetic property. [44,45]…”

Section: Characterizationsmentioning

confidence: 99%

DNA interaction, cytotoxicity and molecular structure of cobalt complex of 4‐amino‐N‐(6‐chloropyridazin‐3‐yl)benzene sulfonamide in the presence of secondary ligand pyridine

Pandya

Patel

Chaudhary

et al. 2019

Applied Organom Chemis

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Novel cobalt complex of 4-amino-N-(6-chloropyridazin-3-yl)benzene sulfonamide (sulfachloropyridazine) has been synthesized and characterized by elemental analysis, FT-IR spectroscopy and magnetic susceptibility (VSM).Cobalt complex of Sulfachloropyridazine (Co-SCP) crystallized in monoclinic space group P2 1 /n with Z = 4. The structure is solved by direct method and refined to R = 0.099 for 4720 reflections with I ⩾4σ(I). The results of FT-IR spectra suggest the binding of cobalt atom to the sulfonamide ligand which is in agreement with the crystal structure determination. In crystal structure, molecule is linked via, C-H … π, C-Cl … π and π … π intermolecular interactions. The computational studies like the optimization energy and root means square deviation compare with single crystal structure, frontier molecular orbital (Homo-Lumo energy) and binding energy of the Co-SCP has been carried out using DFT/B3LYP level of theory in gaseous phase. Hirshfeld surfaces and the 2D-fingerprint analysis are performed to study the nature of interactions and their measurable contributions towards crystal packing. The interaction of the complex with DNA is investigated using viscosity measurement and absorption titration studies. The result shows the complex bind to DNA with intercalative mode with high DNA-binding constant (K b ). Also, in vivo and in vitro cytotoxic studies are performed using S. pombe cells and brine shrimp lethality bioassay. DNA-cleavage study shows better cleaving ability of the complex.

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EPR and electronic spectral studies on Co(II), Ni(II) and Cu(II) complexes with a new tetradentate 6N49 macrocyclic ligand and their biological activity

Cited by 7 publications

References 0 publications

Synthesis, characterization, electronic structure, and non‐linear optical properties (NLO) of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) complexes with 5‐phenylazo‐8‐hydroxyquinoline using DFT approach

Synthesis, characterization, electronic structure, and non‐linear optical properties (NLO) of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) complexes with 5‐phenylazo‐8‐hydroxyquinoline using DFT approach

Transition Metal Schiff Base Complexes Synthesis, Spectral Examination and used as a Catalyst in the Oxidation of Alcohols and C-C Coupling Reactions

DNA interaction, cytotoxicity and molecular structure of cobalt complex of 4‐amino‐N‐(6‐chloropyridazin‐3‐yl)benzene sulfonamide in the presence of secondary ligand pyridine

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