Characterization, thermal and fluorescence study of Mn(II) and Pd(II) Schiff base complexes

Ali, Omyma A.M.

doi:10.1007/s10973-016-6055-9

Cited by 9 publications

(6 citation statements)

References 43 publications

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“…The electronic parameters had no important effect on the catalytic conversion, but the steric effect of the groups present in the Schiff base structure significantly altered the activity of the complexes. In case of p-bromoaldehyde used as an aryl bromide, it provided a conversion between 66-98% (Table 3, entries [5][6][7][8]. In this study, it was found that the efficiency of catalytic transformations for all complexes varied depending on the substitu- ted groups of Schiff base-Pd(II) complexes.…”

Section: Resultsmentioning

confidence: 79%

“…They have been extensively studied due to their important properties such as easy accessibility, low cost, selectivity and sensitivity to central metal ions [1][2][3][4][5][6]. Schiff base complexes exhibit high catalytic activities for a wide range of chemical reactions (e.g., hydrosilylation, homogenous catalyst, transfer hydrogenation, C-C coupling reactions and epoxidation) [7][8][9]. The Suzuki-Miyaura reaction, which is one of the present C-C cross-coupling reactions, is the most important reaction between aryl halides and arylboronic acids and widely used to obtain biaryls.…”

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confidence: 99%

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Schiff Base-Pd(II) Complexes Containing Pyridine and Thiophene Rings: Synthesis, Characterization, Suzuki-Miyaura C-C Coupling Reactions

Buldurun

Özdemir

2019

Hittite J. Sci. Eng.

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S chiff bases are a multinucleated ligand group that forms complexes with many metal atoms through donor atoms. They have been extensively studied due to their important properties such as easy accessibility, low cost, selectivity and sensitivity to central metal ions [1][2][3][4][5][6]. Schiff base complexes exhibit high catalytic activities for a wide range of chemical reactions (e.g., hydrosilylation, homogenous catalyst, transfer hydrogenation, C-C coupling reactions and epoxidation) [7][8][9]. The Suzuki-Miyaura reaction, which is one of the present C-C cross-coupling reactions, is the most important reaction between aryl halides and arylboronic acids and widely used to obtain biaryls. The Suzuki-Miyaura coupling reaction has been extensively studied in the field of synthesis owing to its ease of operation, perfect functional group compatibility, attainable and environmental friendly properties of the initial reagents. Due to their superior properties, biaryls is a widely preferred compound in numerous industrial applications such as pharmaceuticals, natural products, agrochemicals, advanced materials, cosmetics [10][11][12][13][14][15][16][17].

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Section: Resultsmentioning

confidence: 79%

mentioning

confidence: 99%

Schiff Base-Pd(II) Complexes Containing Pyridine and Thiophene Rings: Synthesis, Characterization, Suzuki-Miyaura C-C Coupling Reactions

Buldurun

Özdemir

2019

Hittite J. Sci. Eng.

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“…The third band was detected around λ max = 321 nm which could be correlated to the n-π* transition of the OH, C=N, and NH groups. [28][29][30] The band that emerged at 396 and 379 nm in BSIFe and BSINi complexes corresponded to the LMCT transition. This transition most likely worsens from the p/orbitals of the BSI ligand to the d/orbitals of the metal ions.…”

Section: Electronic Spectra and Conductivity Measurements For Bsi Lig...mentioning

confidence: 99%

Innovation of Fe(III), Ni(II), and Pd(II) complexes derived from benzothiazole imidazolidin‐4‐ol ligand: Geometrical elucidation, theoretical calculation, and pharmaceutical studies

Abu‐Dief,

Said,

Elhady

et al. 2023

Applied Organom Chemis

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The synthesis of a simple, highly tunable, and effective BSI ligand, 2‐(benzothiazol‐2‐ylimino)‐2,3‐dihydro‐1H‐imidazol‐4‐ol, was presented. Three new coordinating substances of BSI ligand were synthesized. Various spectroscopic and analytical methods, including 1H NMR and 13C NMR, infrared (IR), ultraviolet–visible (UV‐vis), thermal conduction, and measures of magnetism, were used to clarify the structures of these compounds. A further examination of the compounds revealed an octahedral‐coordinating environment surrounding the Fe3+ ion, ([Fe(BSI)2(NO3)2](NO3·0.5H2O)) and Ni2+, ([Ni(BSI)2(NO3)2](H2O)2) cations and distorted square planner surrounding Pd2+, ([Pd(BSI)(COOCH3)2]H2O) cation. The cations under investigation were linked to the BSI ligand through the nitrogen of the thiazole ring and NH of the imidazole ring. The formed BSI complexes' thermal deterioration behavior was investigated. Calculated kinetic data for the examined complexes' various phases of deterioration supported their endothermic character. Using the Gaussian 09 software at the B3LYP/LANL2DZ level, the equilibrium geometry of the ligands and their coordination complex has been studied by calculations using density functional theory (DFT). The suggested structures by DFT calculation are in good agreement with experimental data. The antibacterial effectiveness of the examined molecules against different types of bacteria and fungus reveals that the BSIPd complex (MIC = 2.25–4.75 μg/mL) has the greatest activity and is most comparable to the standard. The newly synthesized compounds were also tested against several cell lines using the MTT assay. The results are given as an IC50 value, where the Pd(II) complex values show the potential anticancer properties of the compound. Moreover, the inspected complexes showed significant cell growth inhibition activity (IC50 = 6.79–9.05 μg/mL), even higher than the standard anticancer drugs; cisplatin (IC50 = 18 μg/mL) versus breast carcinoma cells. This intriguing finding was verified by Swiss‐ADME and pharmacophore query calculations. In accordance with the actual findings, the in silico results showed that the free ligand's low activity increased when it complexed with the inspected metal ions.

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“…Antibacterial activity was tested against Gram negative (E. coli, P. aeruginosa, S. enteritidis) and Gram positive (E. faecalis, B. subtilis, S. aureus, B. licheniformis) bacterial species. 24,[38][39][40] Bacterial species were grown in Hinton Müeller Agar (HMA) and suspensions (10 6 cfu/mL) were prepared from 24 h cultures.…”

Section: Determination Of Biological Activitymentioning

confidence: 99%

Some Nitrogen Rich Energetic Material Synthesis by Nucleophilic Substitution Reaction from Polynitro Aromatic Compounds

Gürpınar

Tuncer

Sopacı

et al. 2021

ACSi

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Three new nitrogen-rich energetic compounds, N-(5-chloro-2,4-dinitrophenyl)hydrazine (1), N-(5-chloro-2,4-dinitrophenyl) guanidine (2) and N-(5-chloro-2,4-dinitrophenyl)-4-aminopyrazole (3) prepared by the nucleophilic substitution reaction of 1,3-dichloro-4,6-dinitrobenzene with hydrazine, guanidinium carbonate and 4-aminopyrazole. The compounds were characterized by 1H NMR, 13C NMR, IR and mass spectroscopy. Only compound 2 could be prepared in a suitable crystal and molecular model was determined by X-ray analysis. Compounds were investigated by TG and DSC. Thermal degradation and thermokinetic behavior were investigated by Ozawa–Flynn–Wall and Kissinger–Akahira–Sunose techniques. Compounds were observed to be prone to exothermical thermal decomposition. HOMO and LUMO levels, theoretical formation enthalpy and electrostatic maps were calculated by Gaussian09. The detonation velocity and pressure were calculated by Kamlet–Jacobs equation. The compounds were assayed for antimicrobial properties.

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Characterization, thermal and fluorescence study of Mn(II) and Pd(II) Schiff base complexes

Cited by 9 publications

References 43 publications

Schiff Base-Pd(II) Complexes Containing Pyridine and Thiophene Rings: Synthesis, Characterization, Suzuki-Miyaura C-C Coupling Reactions

Schiff Base-Pd(II) Complexes Containing Pyridine and Thiophene Rings: Synthesis, Characterization, Suzuki-Miyaura C-C Coupling Reactions

Innovation of Fe(III), Ni(II), and Pd(II) complexes derived from benzothiazole imidazolidin‐4‐ol ligand: Geometrical elucidation, theoretical calculation, and pharmaceutical studies

Some Nitrogen Rich Energetic Material Synthesis by Nucleophilic Substitution Reaction from Polynitro Aromatic Compounds

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