Synthesis and Characterization of Manganese, Copper and Zinc Complexes Derived from Schiff - Base Ligand

Kumar, Birendra; Kumar, Bishwanath; Kumar, Sunny; Kumar, Deepak; Sharma, Sandeep

doi:10.13005/ojc/330563

Cited by 7 publications

(2 citation statements)

References 14 publications

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“…The molar conductivity of complexes falls in the range of 18-24 Ohm -1 cm 2 mol -1 , which is indicative of non electrolytic nature of complexes [18][19][20][21][22] .…”

Section: Resultsmentioning

confidence: 99%

“…The interesting structural features of five coordinate complexes with either square pyramidal or trigonal bipyramidal symmetry invited our attention to five coordinate complexes. In continuation of our previous work [14][15][16][17] , in the present paper we report the synthesis and spectral properties of some five coordinate Cu(II) complexes with 1-phenylazo-2-nephthol (PANH) as prime ligand and α-picoline, β-picoline, γ-picoline and water as secondary ligand.…”

Section: Introductionmentioning

confidence: 85%

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Electronic Structure and Spectral Study of Some Five Coordinate Complexes of Copper (II)

Kumar¹,

Rani

Prasad

et al. 2019

Orient. J. Chem

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1-phenylazo-2-nephthol has been synthesized and used for complexation with Cu(II) metal ion along with pyridine, α-picoline, β- picoline, γ-picoline and water as secondary ligands. On the basis of elemental analysis and molar conductivity complexes were formulated as CuL2X [Where L is the prime ligand i.e 1-phenyl-azo-2-nephthol and X is the secondary ligand i.e. pyridine, α-picoline, β-picoline, and H2O.] The magnetic moment of these complexes (1.80 - 1.83 BM) indicates that these complexes are magnetically dilute. The appearance of 3 bands in the electronic spectra of complexes rules out the trigonal bipyramidal (D3h) symmetry arround Cu(II) ion in these complexes rather the electronic spectra favours square pyramidal (C4V) symmetry of these five coordinate complexes. The highest value of 10Dq clearly indicates the greater coordinating ability of α-picoline than pyridine, β-picoline and γ-picoline.

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“…The molar conductivity of complexes falls in the range of 18-24 Ohm -1 cm 2 mol -1 , which is indicative of non electrolytic nature of complexes [18][19][20][21][22] .…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 85%

Electronic Structure and Spectral Study of Some Five Coordinate Complexes of Copper (II)

Kumar¹,

Rani

Prasad

et al. 2019

Orient. J. Chem

Self Cite

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Synthesis, Physicochemical Studies and Powder X‐Ray Diffraction Analyses for New Niclosamide Metal Complexes with Significant Bioactive Behavior

et al. 2023

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This work underlines some important features for the research on metal complexes of Niclosamide as antioxidants and antimicrobial evaluation of some of these compounds as possible therapeutic agents. Niclosamide metal complexes show a significant leap in the study of antibiotic resistance bacteria including Methicillin Resistant S.aureus (MRSA). The synthesized metal complexes of niclosamide in our current innovation are highly effective at eliminating this destructive sort of bacteria. Niclosamide metal complexes were synthesized then characterized by elemental analysis, Infra‐Red, electronic spectra, magnetic susceptibility, Mass spectra and ESR spectra of Cu (II) complex to know their geometries and mode of bonding, with stoichiometry, 1 : 1 (M : L). All the Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II) metal ions complexes were proposed to be with distorted octahedral geometry. Powder X‐Ray Diffraction technique is being utilized to further investigation of synthesized Niclosamide metal complexes. Expo2014 software was also employed to solve the structure of these novel complexes which proven the distortion of crystal structure. The TGA and DTA curves were employed to derive the kinetic thermodynamic parameters. The thermal decomposition of the complexes ended with the formation of divalent metal oxide, MO or trivalent, M2O3 as a final product except in case of Hg complex. The results of the antimicrobial activity of tested new metal complexes compounds exhibited potent antibacterial and antifungal activities in comparison to the Niclosamide ligand as reference. Quantum chemical parameters were estimated and provided noticeable values which completely matched with antimicrobial results that [Mn(NIC)(Cl2)(H2O)2] ⋅ 0.4H2O has higher biological activity than ligand and other novel complexes. low concentration value of MIC results by 125 μg/ml for both niclosamide (NIC) complexes [Ni(NIC)(Cl2)(H2O)2] and [Cu(NIC)(Cl2)(H2O)2] ⋅ 2.5H2O with Methicillin Resistant S.aureus (MRSA) genus maybe a valuable data used to produce novel therapeutic agent. Depending on their structure and on the source of the oxidative stress, metal complexes of Niclosamide might act as antioxidants or pro‐oxidants.

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Interaction of metal ions with Schiff bases having N2O2 donor sites: Perspectives on synthesis, structural features, and applications

Vernekar¹,

Sawant²

2023

Results in Chemistry

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Synthesis and Characterization of Manganese, Copper and Zinc Complexes Derived from Schiff - Base Ligand

Cited by 7 publications

References 14 publications

Electronic Structure and Spectral Study of Some Five Coordinate Complexes of Copper (II)

Electronic Structure and Spectral Study of Some Five Coordinate Complexes of Copper (II)

Synthesis, Physicochemical Studies and Powder X‐Ray Diffraction Analyses for New Niclosamide Metal Complexes with Significant Bioactive Behavior

Interaction of metal ions with Schiff bases having N2O2 donor sites: Perspectives on synthesis, structural features, and applications

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