Study on the thermal behavior of the complexes of the type [PdX2(tdmPz)] (X = Cl−, Br−, I−, SCN−)

Rocha, Fábio R.P.; Barra, Vincent; Franchi, Silmar José Spinardi; Netto, Adelino Vieira de Godoy; Mauro, Antônio Eduardo; Frem, Regina Célia Galvão

doi:10.1007/s10973-010-1239-1

Cited by 6 publications

(3 citation statements)

References 24 publications

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“…The metal content 13.83, 16.44, and 24.85 for Cu, Zn, and Ce, respectively, which are in good agreement with the metal content obtained by elemental analysis, Table 3, (14.53, 15.01, and 24.15 for Cu, Zn, and Ce, respectively). Moreover, considering the initial decomposition temperature of the metal complexes, [Cu (HL)(H 2 O) 3 ]Cl (125°C), [Zn (HL)Cl] (277°C), and [Ce (HL)(NO 3 ) 2 (OH 2 )]H 2 O (98°C after its dehydration), the thermal stability of the complexes varies in the sequence [Zn (HL)Cl] > [Cu (HL)(H 2 O) 3 ]Cl > [Ce (HL)(NO 3 ) 2 (OH 2 )]H 2 O. [ 49 ] …”

Section: Resultsmentioning

confidence: 99%

Cu (II), Zn (II), and Ce (III) metal complexes as antimicrobial pigments for surface coating and flexographic ink

Elsawy

Faheim

Salem

et al. 2021

Applied Organom Chemis

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Metal complexes, which were prepared from the reaction of an N‐salicylidene(4‐aminotoluene‐3‐sulfonic acid) Schiff base ligand (H2L) with Cu (II), Zn (II), and Ce (III), were characterized and confirmed by elemental analysis, molar conductance measurement, melting point, Fourier transform infrared (FT‐IR) spectroscopy, proton nuclear magnetic resonance (1H NMR), electronic spectra, magnetic susceptibility, thermal analysis, and qualitative and quantitative antimicrobial studies. The geometry of the compounds was optimized using the semiempirical PM3 Hamiltonian with Restricted Hartree–Fock (RHF) and root‐mean‐square (RMS) gradient of 0.05 kcal/mol. The ligand and its metal complexes were physically incorporated into a water‐based paint and flexographic ink formulation to study their antimicrobial properties and performances as metal‐complex pigments. The results of their performance tests further enhanced their applications as pigments. The mechanical resistance of the prepared paint and ink was also studied to evaluate the possible drawbacks that were associated with the addition of the prepared pigments. Compared with the blank sample, the studies indicated that the physical incorporation of Cu complexes slightly enhanced the mechanical properties of the painted films (the gloss values, hardness, and adhesion) and printed paper (gloss, color strength [density], and abrasion resistance) according to the American Society for Testing and Materials (ASTM). Further, regarding the antimicrobial test, the obtained results can be represented according to the following activity order: the prepared ligand > Zn complex > Ce complex > Cu complex before or after the incorporations of the paint and ink.

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Section: Resultsmentioning

confidence: 99%

Cu (II), Zn (II), and Ce (III) metal complexes as antimicrobial pigments for surface coating and flexographic ink

Elsawy

Faheim

Salem

et al. 2021

Applied Organom Chemis

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“…The oxidation potential (Epa) for ferrocene was observed at 0.414 V while the reduction potential appeared at 0.337 V giving ΔEp of 77 mV. This falls in the range of a one electron reversible system of 70-100 mV range [39]. The other ferrocenyl containing compounds showed ΔEp values in this range except complex C1 which was slightly lower (60 mV).…”

Section: Cyclic Voltammetrymentioning

confidence: 91%

“…The electron donating groups act contrarily to the electron withdrawing groups. The increased electron density around the iron centre makes it prone to loosing electron hence easy oxidation which is observed by a low value of Epa compared to pure ferrocene [39]. Accordingly, the acetyl group in acetyl ferrocene displayed electron withdrawing behaviour while pyrazole ring in 3-ferrocenylpyrazole acts as electron donating.…”

Section: Cyclic Voltammetrymentioning

confidence: 99%

Synthesis, Characterization and in vitro Biological Activities of Pyrazolylpalladium(II) Complexes towards Selected Strains

Munyaneza¹,

Kumar²,

Morobe³

2018

Synth Catal

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Four palladium(II) complexes vz. C1, [PdCl 2 (L1)] (L1 = 3-ferrocenyl-1H-pyrazole), C2, [PdCl 2 (L2)] (L2 = 3-ferrocenylpyrazolyl-1-methylenepyridine), C3, [PdCl 2 (L3)] (L3 = 3,5-dimethylpyrazole) and C4, [PdCl 2 (L4)] (L4 = 3-phenyl-1H-pyrazole) have been successfully synthesized. The ligands as well as the complexes were characterized by 1 H NMR, IR, UV-vis, thermogravimetric analysis (TGA), cyclic voltammetry, magnetic measurements and mass spectrommetry. The antibacterial and antifungal activities of the ligands and the respective complexes were carried out using the Agar disk diffusion method on two gram positive bacteria (Staphylococcus aureus, Bacillus subtilis), two gram negative bacteria (Escherichia coli, Pseudomonas aeruginosa) and one fungal, Candida albicans.All the compounds displayed biological activity to some extent. However, L3 was more active than most of other compounds towards all the microorganisms screened. The activity was found to generally improve after coordination to palladium metal especially for ligands which do not contain a ferrocenyl moiety.

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Thermal decomposition of new ruthenium(II) complexes containing N-alkylphenothiazines

Holló

Krstić

Sovilj

et al. 2011

J Therm Anal Calorim

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Study on the thermal behavior of the complexes of the type [PdX2(tdmPz)] (X = Cl−, Br−, I−, SCN−)

Cited by 6 publications

References 24 publications

Cu (II), Zn (II), and Ce (III) metal complexes as antimicrobial pigments for surface coating and flexographic ink

Cu (II), Zn (II), and Ce (III) metal complexes as antimicrobial pigments for surface coating and flexographic ink

Synthesis, Characterization and in vitro Biological Activities of Pyrazolylpalladium(II) Complexes towards Selected Strains

Thermal decomposition of new ruthenium(II) complexes containing N-alkylphenothiazines

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