Spectroscopic studies of some copper(II) complexes with amino acids

Stănilă, Andreea; Marcu, A.; Rusu, D.; Rusu, M.; David, L.

doi:10.1016/j.molstruc.2006.11.048

Cited by 83 publications

(50 citation statements)

References 6 publications

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“…The lower stability of the amino acid complex, the greater is the antibacterial activity. This is probably because they have more free ions in the solution, which can enhance the cooperative interaction between the metal ions and the ligands (Marcu et al, 2008;Stanila et al, 2007). This can explain the different antibacterial activity of the copper and cobalt complexes depending on the amino acid type.…”

Section: Discussionmentioning

confidence: 99%

“…The complexes were prepared following the procedure: 2 mmols of all ligands were dissolved in 20 ml distilled water and for deprotonation of the amino acids 0.33 ml 30% NaOH was added (Stanila et al, 2007). Then 1 mmol of the metal salts was dissolved in 2 ml of distilled water, and was added to the deprotonated amino acid solution under measuring the zone of inhibition against the test organisms.…”

Section: Copper and Cobalt Amino Acids Synthesismentioning

confidence: 99%

“…1 A, D, E) (Marcu et al, 2008;Stanila et al, 2007). Powder EPR spectra at room temperature are typical for monomeric species with octahedral local symmetry around the metal ion and are strongly affected by noise.…”

Section: Antibacterial Assaymentioning

confidence: 99%

“…Powder EPR spectra at room temperature are typical for monomeric species with octahedral local symmetry around the metal ion and are strongly affected by noise. Powder EPR spectrum at room temperature for copper complex is quasi-isotropic (g= 2.178) and is characteristic for pseudotetrahedral symmetry around the copper ion (Marcu et al, 2008;Stanila et al, 2007).…”

Section: Antibacterial Assaymentioning

confidence: 99%

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Antibacterial Activity of Copper and Cobalt Amino Acids Complexes

Stănilă

Braicu

Stănilă

et al. 2011

Not Bot Hort Agrobot Cluj

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The antibacterial properties of differently copper and cobalt amino acids complexes on agar plates was investigated in the present study. The antibacterial activity of amino acid complexes was evaluated against on three bacteria strains (Escherichia coli, Bacillus cereus, Micrococcus luteus). Generally, the amino acids complexes were mainly active against gram-positive organisms, species like Micrococcus luteus being the most susceptible strain tested. It was registered a moderate antibacterial activity against Bacillus cereus. The microorganisms Escherichia coli, which are already known to be multi-resistant to drugs, were also resistant to the amino acids complexes but also to the free salts tested. Escherichia coli were susceptible only to the CoCl 2 and copper complex with phenylalanine. The complexes with leucine and histidine seem to be more active than the parent free ligand against one or more bacterial species. Moderate activity was registered in the case of complexes with methionine and phenylalanine. From the complexes tested less efficient antibacterial activity was noted in the case of complexes with lysine and valine. These results show that cobalt and copper complexes have an antibacterial activity and suggest their potential application as antibacterial agents.

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Section: Discussionmentioning

confidence: 99%

Section: Copper and Cobalt Amino Acids Synthesismentioning

confidence: 99%

Section: Antibacterial Assaymentioning

confidence: 99%

Section: Antibacterial Assaymentioning

confidence: 99%

See 2 more Smart Citations

Antibacterial Activity of Copper and Cobalt Amino Acids Complexes

Stănilă

Braicu

Stănilă

et al. 2011

Not Bot Hort Agrobot Cluj

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“…These results clearly show COOH functional group deprotonation and coordination to a Cu 2+ [28][29][30]. In addition, a broad, weak band at 3358 cm −1 observed in BTA film-Cu 2+ and BTA-Cu 2+ powder is attributed to υ OH of the methanol or water involved in the BTA-Cu 2+ structure [21,31,32]. The bands at 813 and 777 cm −1 are assigned to C-S bond vibrations.…”

Section: Xps Spectra Analysismentioning

confidence: 86%

Electrosynthesis, Characterization and Electrocatalytic Behaviour of Organic-Metal Thin-Films Based on 2,2’-Bithiophene-5-carboxylic Acid and Metal Ions

Maouche

Nessark²,

Chelli³

et al. 2014

AJAC

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Synthesis, characterization, density functional theory studies and antibacterial activity of a new Schiff base dioxomolybdenum(VI) complex with tryptophan as epoxidation catalyst

Asgharpour

Farzaneh

Ghiasi

et al. 2017

Applied Organom Chemis

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A cis-dioxomolybdenum(VI) complex was prepared with MoO 2 (acac) 2 and a Schiff base ligand (2-((2-hydroxybenzylidene)amino)-3-(1H-indol-3-yl)propanoic acid) derived from salicylaldehyde and L-tryptophan in ethanol and designated as [MoO 2 (Sal-Tryp)(EtOH)]. It was characterized using several techniques including thermogravimetric and elemental analyses and mass, Fourier transform infrared and UV-visible spectroscopies. Theoretical calculations were performed using density functional theory for studying the molecular structure. An in vitro antibacterial activity evaluation showed that [MoO 2 (Sal-Tryp)EtOH] complex exhibits good inhibitory effects against Gram-positive (Bacillus subtilis, Staphylococcus aureus) and Gram-negative (Escherichia coli, Pseudomonas aeruginosa) bacteria in comparison to standard antibacterial drugs. It was also found that [MoO 2 (Sal-Tryp) EtOH] complex successfully catalyses the epoxidation of cyclooctene, norbornene, cyclohexene, styrene, α-methylstyrene and trans-stilbene, with 45-100% conversions and 64-100% selectivities. Based on the obtained results, the heterogeneity and reusability of the catalyst seem promising.

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Spectroscopic studies of some copper(II) complexes with amino acids

Cited by 83 publications

References 6 publications

Antibacterial Activity of Copper and Cobalt Amino Acids Complexes

Antibacterial Activity of Copper and Cobalt Amino Acids Complexes

Electrosynthesis, Characterization and Electrocatalytic Behaviour of Organic-Metal Thin-Films Based on 2,2’-Bithiophene-5-carboxylic Acid and Metal Ions

Synthesis, characterization, density functional theory studies and antibacterial activity of a new Schiff base dioxomolybdenum(VI) complex with tryptophan as epoxidation catalyst

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