Synthesis, Characterization and Anticorrosion Studies of New Homobimetallic Co(II), Ni(II), Cu(II), and Zn(II) Schiff Base Complexes

Nassar, A. M.; Hassan, Ali M.; Shoeib, Madiha A.; kmash, A. N. El

doi:10.1007/s40735-015-0019-7

Cited by 38 publications

(23 citation statements)

References 33 publications

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“…The antimicrobial results are similar to results observed by [17]. The better antimicrobial activity of TMCSB than the parent SB can be correlated to chelation theory.…”

Section: Resultssupporting

confidence: 88%

Synthesis, biological evaluation and corrosion inhibition studies of transition metal complexes of Schiff base

Kashyap

Kumar

Ramasamy

et al. 2018

Chemistry Central Journal

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BackgroundThe transition metal complexes formed from Schiff base is regarded as leading molecules in medicinal chemistry. Because of the preparative availability and diversity in the structure of central group, the transition metals are important in coordination chemistry. In the present work, we have designed and prepared Schiff base and its metal complexes (MC1–MC4) and screened them for antimicrobial, anticancer and corrosion inhibitory properties.MethodologyThe synthesized metal complexes were characterized by physicochemical and spectral investigation (UV, IR, 1H and 13C-NMR) and were further evaluated for their antimicrobial (tube dilution) and anticancer (SRB assay) activities. In addition, the corrosion inhibition potential was determined by electrochemical impedance spectroscopy (EIS) technique.Results and discussionAntimicrobial screening results found complexes (MC1–MC4) to exhibit less antibacterial activity against the tested bacterial species compared to ofloxacin while the complex MC1 exhibited greater antifungal activity than the fluconazole. The anticancer activity results found the synthesized Schiff base and its metal complexes to elicit poor cytotoxic activity than the standard drug (5-fluorouracil) against HCT116 cancer cell line. Metal complex MC2 showed more corrosion inhibition efficiency with high Rct values and low Cdl values.ConclusionFrom the results, we can conclude that complexes MC1 and MC2 may be used as potent antimicrobial and anticorrosion agents, respectively.

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“…The antimicrobial results are similar to results observed by [17]. The better antimicrobial activity of TMCSB than the parent SB can be correlated to chelation theory.…”

Section: Resultssupporting

confidence: 88%

Synthesis, biological evaluation and corrosion inhibition studies of transition metal complexes of Schiff base

Kashyap

Kumar

Ramasamy

et al. 2018

Chemistry Central Journal

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“…Co‐Sanp displayed the highest E PDP among the other compounds. Similar results were already reported for Co‐complexes with Schiff base . The sequence of E PDP for the investigated inhibitors is Co‐Sanp > Ni‐Sanp > H 2 Sanp.…”

Section: Resultssupporting

confidence: 88%

Sulfonated salicylidene thiadiazole complexes with Co (II) and Ni (II) ions as sustainable corrosion inhibitors and catalysts for cross coupling reaction

El‐Lateef

Sayed

Adam

2019

Applied Organom Chemis

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Condensation of 2,5-dihydrazinyl thiadiazole with 5-sodium sulfonate salicylaldehyde afforded dibasic tetradentate pincer N,O,O,N-salicyldiene thiadiazole ligand (H 2 Sanp). The novel dipolar ligand formed para-magnetic pincer complexes within Co (II) and Ni (II) ions (Co-Sanp and Ni-Sanp) under sustainable conditions. The water-soluble ligand and its metal-complexes were estimated by mass, IR and UV-Visible spectroscopy, EA (elemental analyses), TGA (Thermogravimetric analyses), magnetic susceptibility, and conductivity measurements. The catalytic reactivity of Co-Sanp and Ni-Sanp were evaluated in the Suzuki and Buchwald-Hartwig cross coupling reaction in aqueousmethanol binary mixtures. Both reactions of boronic acid or aryl amines with aryl halides gave high chemoselective yield of C-C or C-N product. The inhibition characteristics of H 2 Sanp and its Ni-and Co-complexes were performed for the C-steel corrosion in 1.0 M HCl using electrochemical measurements and surface analysis methods. These methods indicated that the synthesized compounds have served as efficient mixed-type corrosion inhibitors and their adsorption on the steel surface obeyed isotherm model of Langmuir. Co-Sanp inhibitor displays the best corrosion inhibition efficiency, and the capacity is up to 97.11% at of 250 mg L −1 . Surface analysis confirms formation of protective layer on the C-steel surface.

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“…Sulfate‐reducing bacteria (SRB) are reported to be the main reason for MIC by accelerating the corrosion rate and inducing stress corrosion and pitting corrosion . In previous works, we have studied the effect of Schiff base metal complexes as SRB growth inhibitors in the protection of metals from microbial corrosion.…”

Section: Introductionmentioning

confidence: 99%

“…It appears from a literature survey that transition metal complexes have anticorrosion properties . According to Mahdavian and Attar, the interaction of transition metal complexes with mild steel is greatly affected by their standard electrode potentials, their reactivity and the nature of the ligand used to stabilize the metallic complexes.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, corrosion inhibition of mild steel in HCl (0.5 N) solution and solid‐state electrical conductivity of new Co(II), Ni(II), Cu(II) and Zn(II) complexes

Nassar

Hassan

Elkmash

2016

Applied Organom Chemis

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This work consists of a study of the corrosion‐inhibiting and semiconducting properties of new binuclear Co(II), Ni(II), Cu(II) and Zn(II) complexes with a Schiff base, H2L, obtained from the 2:1 M condensation of salicylaldehyde and o‐dianisidine, respectively. Elemental, spectral and thermal analyses were used to characterize these complexes. The magnetic susceptibilities of these complexes were also determined. Weight loss, potentiodynamic polarization and scanning optical microscopy were the techniques used to investigate the efficiency of these new compounds as corrosion inhibitors. The antibacterial activity of the compounds was measured against sulfate‐reducing bacteria. It was found that inhibition occurs via the chemisorption of metal complexes on the steel surface. This absorption obeys the Langmuir adsorption isotherm model.

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Synthesis, Characterization and Anticorrosion Studies of New Homobimetallic Co(II), Ni(II), Cu(II), and Zn(II) Schiff Base Complexes

Cited by 38 publications

References 33 publications

Synthesis, biological evaluation and corrosion inhibition studies of transition metal complexes of Schiff base

Synthesis, biological evaluation and corrosion inhibition studies of transition metal complexes of Schiff base

Sulfonated salicylidene thiadiazole complexes with Co (II) and Ni (II) ions as sustainable corrosion inhibitors and catalysts for cross coupling reaction

Synthesis, characterization, corrosion inhibition of mild steel in HCl (0.5 N) solution and solid‐state electrical conductivity of new Co(II), Ni(II), Cu(II) and Zn(II) complexes

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