Coordination complexes of Bipyridines (CCBs): Chemistry, bonding and applications

Coordination Chemistry Reviews, Год журнала: 2025, Номер 529, С. 216433 - 216433

Опубликована: Янв. 13, 2025

Язык: Английский

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Anticancer, antimicrobial and photocatalytic activities of a new pyrazole containing thiosemicarbazone ligand and its Co(III) and Ni(II) complexes: Synthesis, spectroscopic characterization and X-ray crystallography

Journal of Inorganic Biochemistry, Год журнала: 2024, Номер 257, С. 112577 - 112577

Опубликована: Апрель 30, 2024

Язык: Английский

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Synthesis, characterization, X-ray Crystallography, Photoluminescence property and DNA binding activity of Co(II) and Ni(II) complexes of a pyrazole-containing Schiff-base ligand

Journal of Coordination Chemistry, Год журнала: 2024, Номер 77(1-2), С. 170 - 187

Опубликована: Янв. 17, 2024

Two new complexes, [Co(MPAFA)3](ClO4)2 (1) and [Ni(MPAFA)3](NO3)2·2H2O (2), of an 'NN' bidentate Schiff-base ligand, N-(furan-2-ylmethyl)-1-(5-methyl-1H-pyrazol-3-yl)methanimine (MPAFA), have been synthesized characterized by physicochemical spectral methods such as elemental analyses, conductance, IR, UV-Vis, emission spectra. In both three ligands coordinate with a metal ion to form 1:3 complexes. Both 1 2 are distorted octahedral cationic, behaving 1:2 electrolytes. IR spectra showed that each the coordinates via pyrazolyl tertiary nitrogen azomethine atoms. Single crystal X-ray studies confirmed CoN6 NiN6 coordination for 2, respectively, complexes exhibit π…π stacking various hydrogen bonding interactions. fluorescent participate in DNA binding calf thymus (CT-DNA) groove binding.

Язык: Английский

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Synthesis, characterization, photoluminescence properties, DFT studies, photocatalytic and antifungal activity of a new pyrazole-containing thiosemicarbazone ligand and its Co(III) and Ni(II) complexes

Journal of Coordination Chemistry, Год журнала: 2023, Номер 76(9-10), С. 1261 - 1280

Опубликована: Май 19, 2023

A new pyrazole-based thiosemicarbazone ligand, 5-methyl-3-formylpyrazole-N(4)-dipentylthiosemicarbazone (HMPzNPent2) (1), and its Co(III) Ni(II) complexes, [Co(MPzNPent2)2]Br (2) [Ni(HMPzNPent2)2]Cl2 (3), respectively, were synthesized characterized. Complexes 2 3 are cationic in nature behave as 1:1 1:2 electrolytes MeOH, respectively. Electronic spectral features of the complexes indicate distorted octahedral structures. IR data (4000–450 cm−1) suggest monoprotic tridentate (NNS) coordination 1 to via pyrazolyl (tertiary) ring nitrogen, azomethine nitrogen thiolato sulfur; In contrast, is a neutral NNS donor 3, coordinating iminic thioketo sulfur. Structural compounds confirmed by DFT calculations. TD-DFT absorption spectra authenticate that simulated peaks reasonable agreement with experimentally resolved peaks. Fluorescence studies revealed photoluminescent behavior. The three reported here have photocatalytic activity. (used positive control) show similar antifungal activity inhibiting growth phytopathogen Colletotrichum siamense (CS), whereas less efficient control CS. Both against gloeosporioides (AP2). Compound more effective prevent Fusarium equisetum (F.E) than (positive control).

Язык: Английский

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Synthesis, Spectroscopy, X-ray Structures, DNA Binding and Photocatalytic Properties of Two Ni(II) and Co(II) Complexes of a Pyrazolyl Schiff-base Ligand

Acta chimica slovenica, Год журнала: 2024, Номер 71(1), С. 110 - 122

Опубликована: Март 11, 2024

Two new nickel(II) and cobalt(II) complexes, [Ni(MPAFA)3](BF4)2 (I) [Co(MPAFA)3](BF4)2 (II) were synthesized from a pyrazole containing ‘NN’ bidentate Schiff-base ligand, N-(furan-2-ylmethyl)-1-(5-methyl-1H-pyrazol-3-yl)methanimine, (MPAFA) (L). The complexes I II characterized by various physico-chemical spectral parameters. Both 1:3 (M:L) coordination behaving as 1:2 electrolytes. Single crystal X-ray diffraction studies revealed that both of them distorted octahedral in nature with N6 donor set. binding interactions the CT-DNA studied UV-Vis fluorescence spectroscopic methods. was found to bind partial intercalative mode, whereas bound via groove-like manner solutions. ligand shown have potential photocatalytic activity degrading methylene-blue (MB) under light irradiation.

Язык: Английский

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Photocatalytic properties of two Co(II) coordination polymers with tri(2-methylimidazole) and multicarboxylate

Polyhedron, Год журнала: 2023, Номер 234, С. 116328 - 116328

Опубликована: Фев. 6, 2023

Язык: Английский

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Highly Efficient Cauliflower-like Palladium-Loaded Porous MOF as a Robust Material for the Degradation of Organic Dyes

ACS Omega, Год журнала: 2023, Номер 8(42), С. 38895 - 38904

Опубликована: Окт. 13, 2023

A series of porous MOF materials, viz., Pdx@IRMOF-9 (x = 2, 5, and 10%) were synthesized by loading varying concentrations Pd(II) on IRMOF-9. The materials characterized ltravioletisible (UV–Vis) spectroscopy, Fourier transform Infrared (FT-IR) powder X-ray diffraction (PXRD), Brunauer–Emmett–Teller (BET), scanning electron microscopy (SEM) analyses. UV, FT-IR, PXRD data Pd(II)@IRMOF-9 found to be in line with those IRMOF-9, which suggests that the structure IRMOF-9 remained intact upon loading. Surface morphology showed sheet-like structures, incorporation cauliflower-shaped MOFs obtained. SEM area mapping Pd10%@IRMOF-9 confirmed homogeneous dispersion BET measurements suggested an increase surface as well pore size Due high porosity petal density, demonstrated degradation seven organic dyes, namely, orange G, methylene blue, methyl orange, congo red , red, rhodamine 6G, neutral red. It excellent results >90% dye efficiency case cationic, anionic dyes. Degradation dyes followed pseudo-first-order kinetics. Kinetic parameters, KM Vmax, calculated using double reciprocal Lineweaver–Burk plot 13.2 μM 26.68 × 10–8 M min–1, respectively. Recyclability studies heterogeneous CR for five consecutive cycles without significant loss its catalytic activity. Herein, a robust efficient material has been developed demonstrated.

Язык: Английский

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Synthesis, Spectroscopy and Structural Elucidation of Two new CoII and NiII Complexes of Pyrazole Derived Heterocyclic Schiff base ligand as Potential Anticancer and Photocatalytic Agents

Chemistry Africa, Год журнала: 2023, Номер 7(3), С. 1211 - 1221

Опубликована: Дек. 9, 2023

Язык: Английский

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