Synthesis and structural investigation of some mixed-ligand selenito complexes of cobalt(II)

Chourasia, Prerna; Suryesh, K K; Mishra, Anju

doi:10.1007/bf02877480

Cited by 12 publications

(1 citation statement)

References 10 publications

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“…Since ∆G*, ∆H*, and ∆S* are relevant to the greatest ratios, they are computed by the peak temperature Ts (Table 4). The activated prepared metal complexes were found to be more orderly structured than reactants and this was proved by the negative value of ∆S* [24].…”

Section: Kinetic Thermodynamic Parametersmentioning

confidence: 93%

Synthesis, Spectroscopic Characterization, and Biological Activities of New Binuclear Co(II), Ni(II), Cu(II), and Zn(II) Diimine Complexes

et al. 2021

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Metal-ligand complexes have attracted major interest due to their potential medical applications as anticancer agents. The work described in the current article aimed to synthesize, spectroscopic, thermal, and biological studies of some metal-diimine complexes. A diimine ligand, namely 2-{[2-(4-chlorophenyl)-2-hydroxyvinyl]-hydrazonomethyl}phenol (diim) was prepared via the reaction of p-chlorophenacyl bromide with hydrazine hydrate in ethanol, then condensation was completed with 2-hydroxybenzaldehyde in acetic acid. The Co(II), Ni(II), Cu(II), and Zn(II) complexes were prepared with a metal:ligand stoichiometric ratio of (2:1). 1H-NMR, UV-Vis, FTIR spectroscopic data, molar conductivity measurements, and microanalytical data (carbon, hydrogen, nitrogen, and halogen) were used for characterization of the formed ligand and its metal complexes. It was found that the diimine ligand act as tetradentate fashion. The non-electrolytic character for all the complexes was proved by molar conductivity. The first metal atom of the synthesized binuclear diimine complexes coordinates with the nitrogen of hydrazine group and oxygen of OH group. While, the second metal atom coordinates with the other nitrogen atom of the hydrazine group and oxygen of phenolic group. All the synthesized metal complexes have a six-coordinated except for Zn(II) has four-coordinated. Thermogravimetric analysis and its differential analysis were done to discuss the thermal degradation of the free ligand and its metal complexes. Molecular docking calculation showed that the diimine ligand is a good inhibitor for breast cancer 3hb5 and 4o1v kidney cancer proteins. Additionally, these compounds were evaluated as antibacterial and antifungal agents.

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Section: Kinetic Thermodynamic Parametersmentioning

confidence: 93%

Synthesis, Spectroscopic Characterization, and Biological Activities of New Binuclear Co(II), Ni(II), Cu(II), and Zn(II) Diimine Complexes

et al. 2021

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Thermal, magnetic and X-ray diffraction studies on mixed-ligand dimetavanadato complexes of manganese(II)

Mishra

1995

Proc. Indian Acad. Sci. (Chem. Sci.)

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Novel mixed-ligand dimetavandato complexes of Mn(II) of composition [Mn(en)(H20)2(VO3)2] and [Mn(pz)(H20)2(VO3)z]H20 (where en = 1,2-diaminoethane, pz = hexahydropyrazine) have been synthesized. The probable structures of the complexes have been worked out on the basis of elemental analysis, IR spectra, magnetic measurements and thermogravimetric analysis. X-ray powder diffraction study has been carried out to determine the unit lattice parameters. Magnetic moment values indicate high-spin complexes of manganese. Dynamic thermogravimetric data of the relevant steps of thermal degradation have been analysed for the study of solid-state kinetics. Non-isothermal methods by Piloyan-Novikova, Coats-Redfern and Horowitz-Metzger have been employed for evaluating the kinetic parameters viz. energy of activation, frequency factor and entropy of activation. The mechanism of non-isothermal decomposition of complexes is 'phase boundary contracting cylinder nucleation'.

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Thermoanalytical behaviour of carbaryl and its copper(II) and zinc(II) complexes

Kalia

Sankhyan

Puri

et al. 2011

J Therm Anal Calorim

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Synthesis and structural investigation of some mixed-ligand selenito complexes of cobalt(II)

Cited by 12 publications

References 10 publications

Synthesis, Spectroscopic Characterization, and Biological Activities of New Binuclear Co(II), Ni(II), Cu(II), and Zn(II) Diimine Complexes

Synthesis, Spectroscopic Characterization, and Biological Activities of New Binuclear Co(II), Ni(II), Cu(II), and Zn(II) Diimine Complexes

Thermal, magnetic and X-ray diffraction studies on mixed-ligand dimetavanadato complexes of manganese(II)

Thermoanalytical behaviour of carbaryl and its copper(II) and zinc(II) complexes

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