Studies of mn (ii) and ni (ii) complexes with schiff base derived from 2-amino benzoic acid and salicylaldehyde

Aliyu, HN; Ado, I.

doi:10.4314/bajopas.v3i1.58803

Cited by 12 publications

(17 citation statements)

References 7 publications

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“…The moderately higher decomposition temperature suggested a good thermal stability of the complexes Aliyu and Ado, (2010). Pale blue 60.10 Key: M.F = Molecular formula, M.P = Melting point ( o C), D.T = Decomposition temperature ( o C), L 1 = (E) -4 -((2-hydroxyphenyl)imino)-2-phenyl-4H-chromen-6-o1, L 2 = (E) -2 -((6-hydroxy-2-phenyl-4H-chromen-4-ylidene)amino)benzaldehyde,…”

Section: Results and Discussion Physical Properties Of The Compoundsmentioning

confidence: 99%

Synthesis, spectroscopic characterization and <i>in vitro</i> antibacterial activity studies of Cu(II) complexes derived from 6- hydroxyflavone Schiff bases

Bello¹,

Shallangwa²,

Idris³

et al. 2019

Bayero J. Pure App. Sci.

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This study reported the synthesis of the ligands (E) chromen-6-o1 (L 1) and (E)-2-((6 (L 2). These two Schiff base ligands were synthesized by refluxing e hydroxyflavone with 2-aminophenol and 2 synthesized Schiff bases were subsequently reacted with Cu(II) acetate to form the corresponding metal complexes C 1 and C 2. The compounds melting point and decomposition temperature studies, solubility test, magnetic susceptibility studies and gravimetric analysis. The purity of the compounds were analysed using TLC. The spectroscopic data indicated that the Schiff base ligands acted as tridentate and coordinated to the metal via imine nitrogen and deprotonated phenolic oxygen atoms. The Schiff base ligands have melting point between 166-185 o 202 o C. Magnetic susceptibility studies showed that the complexes are paramagnetic in nature with the µ eff values are in the range of 1.9 found to be in the range of 20.4 nature. The solubility test of the compounds indicated that they are soluble in most organic solvents except water, acetone and tetrachloro methane in which are completely insoluble. The Cu(II) acetate, synthesized ligands and their metal complexes were studied for their in vitro antibacterial activity against two gram positive bacteria (Staphylococcus aureus and Bacillus subtilis) and two gram negative bacteria (Escherichia coli and Salmonel diffusion method and the results indicated that the complexes were more active than the ligands and the Cu(II) acetate but less active compared to standard drug (ciprofloxacin). Keywords: 6-hydroxyflavone, 2-aminophenol, 2 activity. compounds (Refat et al., 2013), perhaps due to biochemical and antimicrobial properties. Copper(II)

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Section: Results and Discussion Physical Properties Of The Compoundsmentioning

confidence: 99%

Synthesis, spectroscopic characterization and <i>in vitro</i> antibacterial activity studies of Cu(II) complexes derived from 6- hydroxyflavone Schiff bases

Bello¹,

Shallangwa²,

Idris³

et al. 2019

Bayero J. Pure App. Sci.

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“…The peak between 1620 and 1580 cm -1 have been assigned to υ C=N by Aliyu and Ado [4] and Johari et al [5]. The bands appearing between 1520 and 1600 cm -1 have been assigned to aromatic υ C=C .…”

Section: Infra-red Spectramentioning

confidence: 99%

“…The bands appearing at 1315-1400 cm -1 (specially the highest frequency ones near 1400 cm -1 ) have been assigned to υ C-N mode. Aliyu and Ado 4 have assigned a band near 1400 cm -1 to υ C-N for M(II) (M=Mn, Ni, Cu) Schiff base complexes. The νC-O (Phenolic) stretching frequency of ligand seen at around 1380 cm -1 gets shifted to a lower frequency region in the complexes in the range of 1372-1326 cm -1 , and this is indicatve of bonding through the phenolic oxygen [6].…”

Section: Infra-red Spectramentioning

confidence: 99%

“…A number of metal complexes with dibasic tridentate Schiff bases derived from various thiosemicarbazide hydrazides, o-hydroxybenzylamine or ethanolamine and o-hydroxy-aromatic aldehydes/ketones have been synthesized and characterized by Syamal et al [1][2][3]. A number of authors [4][5][6] studied different aspects, physical characterization, spectroscopic and potentiometric investigations and antibacterial activity of several M (ΙΙ) complexes including Mn, Ni, Fe, Zn, Cu and Co with the Schiff bases derived from 2-amino benzoic acid and salicylaldehyde. Metal Complexes with Ligands derived form aroylhydrazines and aromatic or aliphatic carbonyls gained a great interest of studies.…”

Section: Introductionmentioning

confidence: 99%

“…Transition metal complexes derived from Schiff bases have been reported to have biological activity [4]. Pb(II) complex with the Schiff base derived from salicylaldehyde and opheneylenediamine has been prepared and its geometry was investigated [12].…”

Section: Introductionmentioning

confidence: 99%

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Pb(II) Complexes of Schiff Bases Derived from Benzoylhydrazine as the Antibacterial Agents

Uddin¹

2015

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Some Pb(II) complexes of dibasic tridentate Schiff base ligands derived from aldehydes/ketones and benzoylhydrazine have been synthesized and characterized by some physico-chemical studies; elemental, spectral (IR, UV, NMR, Mass), magnetic, and conductance analyses. The CHN elemental analysis data showed the formation of 1:1 [M:L] complexes. The obtained molar conductance values revealed non-electrolytic nature. The results of magnetic moment measurements supported diamagnetic phenomenon for the complexes. The infrared spectral data displayed the main coordination sites of ligands towards Pb 2+ ions. The electronic spectral results of the complexes showed π→π* (phenyl ring), n→π* (HC=N), CT transition. Based on analytical data trigonal pyramidal geometry for the prepared complexes has been proposed. The antibacterial activity of the prepared complexes was also studied against some gram positive and gram negative bacteria. It is found that some of the complexes are quite effective against tested bacteria.

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Nickel complexes of Schiff bases derived from mono/diketone with anthranilic acid: Synthesis, characterization and microbial evaluation

Hasan

Salam

Uddin

2016

Journal of Taibah University for Science

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The nickel(II) complexes of the dibasic tridentate Schiff bases viz. Sal-AnthraH 2 , HNP-AnthraH 2 , HAP-AnthraH 2 , HPP-AnthraH 2 , Acac-AnthraH 2 , Etac-AnthraH 2 , and Bzac-AnthraH 2 , have been synthesized and characterized by IR, 1 H NMR, mass and electronic spectra, and magnetic and conductance studies. On the basis of analytical data, four-coordinate geometry was proposed for the prepared nickel(II) complexes. The complexes have been found to possess 1:1 stoichiometry. The bio-efficacy of the prepared complexes has been examined against the growth of bacteria and fungi in vitro to evaluate their antimicrobial potential.

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Studies of mn (ii) and ni (ii) complexes with schiff base derived from 2-amino benzoic acid and salicylaldehyde

Abstract: ABSTRACT

Cited by 12 publications

References 7 publications

Synthesis, spectroscopic characterization and <i>in vitro</i> antibacterial activity studies of Cu(II) complexes derived from 6- hydroxyflavone Schiff bases

Synthesis, spectroscopic characterization and <i>in vitro</i> antibacterial activity studies of Cu(II) complexes derived from 6- hydroxyflavone Schiff bases

Pb(II) Complexes of Schiff Bases Derived from Benzoylhydrazine as the Antibacterial Agents

Nickel complexes of Schiff bases derived from mono/diketone with anthranilic acid: Synthesis, characterization and microbial evaluation

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