Green Synthesis of Nickel(II) and Zinc(II) Complexes of Bis(Imine) Schiff base Derived from o-vanilline and m-phenylenediamine.

Sani, S.; Siraj, I.T.; Kurawa, M.A.

doi:10.37628/jcscr.v6i1.950

Cited by 4 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The bands at 456.00 cm -1 (758.39 cm -1 ) and 426.60 cm -1 (701.24 cm -1 ) which could not be traced in the spectrum of aspirin is tentatively assigned to M-O and M-Cl stretching frequencies as shown in the Table 4. These values were consistent with the results of [15]. The results as presented in Table 5 shows that aspirin is active against all the bacteria isolates in all concentrations except in E. coli at 500 μg, while the complexes from both methods showed an increase in the activity than the free ligand of aspirin and are compared with the standard of ciprofloxacin as reported by [16].…”

Section: Resultssupporting

confidence: 90%

“…The IR data of the aspirin and its complexes are reported in Table 4. The IR data of metal complexes behaves as bidentate manner which coordinate via one of the oxygen atoms of acidic group with the displacement of hydrogen atom and carbon of ester [15], bands at 1752.46cm -1 and 1581.71 cm -1 in the spectrum of free aspirin are assigned to υ(C=O) by ester and carboxylic group after deprotonation as these shifted in different frequencies 1756.82 cm -1 (1577.68 cm -1 ) and 1756.54 cm -1 (1681.41 cm -1 ) for both methods. The shifted proves that these groups represent the coordination sites of aspirin after deprotonation in carboxylic group (Mustapha et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Comparative Synthesis, Spectral and Antimicrobial Studies of Metal (Ii) Complexes Derived From Aspirin

Jibril¹,

Jibrin²,

Isah³

et al. 2023

JCSN

View full text Add to dashboard Cite

The objective of this research work is to compare the findings of the two techniques of synthesis (solid state and solution based synthesis) in order to know whether the two results are similar or not and also to determine if the introduction of the metal ion increase or decrease the activity of the drug. From the spectral studies, it revealed that the ligand act as bidentate which coordinated to the central metal through the carbonyl of acid and ester. The elemental analysis data agreed with the proposed structure of the complexes and revealed the ratio of 2:1. Bacterial activity test shows the increase in activity from the complexes compared with the free ligand. The authors recommend the application of solid state synthesis as the method also provide the same or better result than the solution based synthesis and also the solid state method is more effective and greener synthesis.

show abstract

Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Comparative Synthesis, Spectral and Antimicrobial Studies of Metal (Ii) Complexes Derived From Aspirin

Jibril¹,

Jibrin²,

Isah³

et al. 2023

JCSN

View full text Add to dashboard Cite

show abstract

“…These higher values provide the evidence of coordination between the ligand and metal ions as reported by [7]. Conductivity measurement as shown in Table 1 and performed in 1x10 Similar results were reported by [10]. The electronic spectra data is shown in Table 4 in which the ligand present three distinct absorption bands at 207nm, 208nm and 238nm attributed to n-π * , π-π * and C T which was assigned to the metal-ligand charge transfer [11].…”

Section: Resultssupporting

confidence: 79%

Solvent-Free Preparation and Antimicrobial Studies of Metal (Ii) Complexes Derived From Cloxacillin

Jibril¹,

Saje²,

Musa³

et al. 2023

JCSN

View full text Add to dashboard Cite

The authors use an environmental friendly, solvent-free method to prepare metal (II) complexes of cloxacillin and to determine the activity of the complexes. The complexes are more active against the bacteria isolates than the free cloxacillin. The spectral studies showed the cloxacillin (ligand) as monobasic bidentate material that form a complex with metal ion through the carbonyl of amide and carboxylate groups of carboxylic acid, microanalysis results prove that the ligand to metal ratio is 2:1. The researchers recommend the use of solvent-free drugs in the manufacture of metal (II) complexes of active pharmaceutical ingredients to avoid the excessive use of solvents that cause global problems.

show abstract

“…Table 4 exhibits the results of an analysis of the IR spectral data comparing the bonding types that occur in complexes to those that occur with free HCBHDCS ligands. The free HCBHDCS ligand exhibits IR bands at 3216, 3190, and 1652 cm -1 for phenolic (C-O), (N-H), and (C=O), respectively [41][42][43]. The phenolic band was observed at 3216 cm -1 in the ligand; the absence of this band in complexes is evidence that the phenolic oxygen has been coordinated with metal ions via deprotonation [44].…”

Section: Ft(ir) Spectramentioning

confidence: 99%

Synthesis, Characterization, and Antimicrobial Activity of New Metal Complexes Derived from 4-chloro-N'-[(E)-(3,5-dichloro-2-hydroxyphenyl) methylidene] benzohydrazide

Mhatre,

Gharat,

Tawde

et al. 2023

ijmst

View full text Add to dashboard Cite

Metal(II) complexes, derived from the ligand 4-chloro-N'-[(E)-(3,5-dichloro-2-hydroxyphenyl)methylidene]benzohydrazide (HCBHDCS), were synthesized. These included elemental analyses, IR, UV-VIS, 1H and 13C NMR, ESR and mass spectroscopy, and magnetic susceptibilities and conductivities measurements. The Fe(II), Mn(II), Cu(II), Co(II), and Mn(II) complexes exhibit a high spin octahedral geometry, Pd(II) is square planar, and Cd(II), Hg(II) and Zn(II) are tetrahedral in nature. The electron spin resonance (ESR) spectrum observed in solid copper(II) complex exhibits distinct characteristics indicative of their specific configurations. This complex possesses a ground state with an axial symmetry type. The obtained values substantiated distorted octahedral geometry, indicating a significant ionic or covalent environment. Values for molar conductance in DMF show complexes' non-electrolytic behavior. To determine their crystal structures, X-ray powder diffraction is used. Antimicrobial activity has been tested in the metal complexes and Schiff's base HCBHDCS ligand. In comparison to regular streptomycin, each combination and ligand has greater antibacterial activity against the bacteria E. Coli. At the same time, C. albicans (MCC 1439) and S. cerevisiae (MCC 1033) show good antifungal efficacy, with growth reduced by more than 90% in response to Mn(II) and Fe(II) complexes, respectively. The in-vitro cytotoxic effects of these synthesized ligands and their complexes were also investigated using the brine shrimp bioassay.

show abstract

Green Synthesis of Nickel(II) and Zinc(II) Complexes of Bis(Imine) Schiff base Derived from o-vanilline and m-phenylenediamine.

Cited by 4 publications

References 0 publications

Comparative Synthesis, Spectral and Antimicrobial Studies of Metal (Ii) Complexes Derived From Aspirin

Comparative Synthesis, Spectral and Antimicrobial Studies of Metal (Ii) Complexes Derived From Aspirin

Solvent-Free Preparation and Antimicrobial Studies of Metal (Ii) Complexes Derived From Cloxacillin

Synthesis, Characterization, and Antimicrobial Activity of New Metal Complexes Derived from 4-chloro-N'-[(E)-(3,5-dichloro-2-hydroxyphenyl) methylidene] benzohydrazide

Contact Info

Product

Resources

About