Synthesis and spectroscopic characterization of hydroxylamido/amino acid complexes of oxovanadium(V)

Arrambide, Gabriel; Gambino, Dinorah; Baran, Enrique J.

doi:10.1080/00958970802474821

Cited by 13 publications

(12 citation statements)

References 31 publications

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“…Baran also synthesized a series of mixed ligand oxovanadium(V) containing the hydroxylamido ligand (isoelectronic with hydrogen peroxide) and simple amino acids and then studied their vibrational spectra [16]. Similarly, in our previous papers, interactions between peroxovanadate complexes and organic ligands were explored through detailed spectroscopic investigations [17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

NMR studies on interactions between diperoxovanadate and picolinamide-like ligands

Zeng

Wang

et al. 2010

Journal of Coordination Chemistry

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To understand the effects of picolinamide-like ligands on reaction equilibrium, a series of picolinamide derivatives were synthesized and the interactions between the diperoxovanadate complex [OV(O 2 ) 2 L] À (L ¼ D 2 O or HOD, abbr. bpV) and picolinamide ligands in solution were explored using multinuclear ( 1 H, 13 C, and 51 V) magnetic resonance, COSY, and HSQC in 0.15 mol L À1 NaCl ionic medium for mimicking physiological conditions. Formation constants among the picolinamide-like ligands are N-(1-hydroxypropan-2-yl)-picolinamide % N-(2-hydroxypropyl)-picolinamide4N-(3-hydroxypropyl)-picolinamide4N-propyl-picolinamide. The substituting group influences the equilibrium by electronic effects. The interactions result in a series of new seven-coordinate diperoxovanadate species [OV(O 2 ) 2 L 0 ] À (L 0 ¼ picolinamidelike ligands).

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Section: Introductionmentioning

confidence: 99%

NMR studies on interactions between diperoxovanadate and picolinamide-like ligands

Zeng

Wang

et al. 2010

Journal of Coordination Chemistry

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“…All these reagents were used as supplied. Samples of the investigated complex were obtained by the general procedure previously outlined [11], as follows: 0.117 g (1.0 mmol) of NH 4 VO 3 and 0.230 g (5.8 mmol) of NaOH were dissolved in 10 mL of distilled water, and the mixture was heated at 50 • C under stirring. After cooling to r. t., 0.463 g (3.1 mmol) of DL-methionine was added in small portions, under continuous stirring.…”

Section: Methodsmentioning

confidence: 99%

“…In a recent paper, we described the synthesis of a number of oxovanadium(V) complexes of the type [VO(NH 2 O) 2 (amino acid)] and investigated in detail the vibrational-spectroscopic behavior of the hydroxylamido ligand present in them [11].…”

Section: Introductionmentioning

confidence: 99%

Crystal and Molecular Structure of a New Hydroxylamido/Amino Acid Oxovanadium(V) Complex, [VO(NH2O)2(DL-methioninato)] · H2O

Piro¹,

Echeverría²,

Arrambide³

et al. 2011

Z. Naturforsch. B

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The crystal and molecular structure of the [VO(DLmeth)(NH 2 O) 2 ]•H 2 O complex has been determined by X-ray diffraction methods (monoclinic, P2 1 /c with a = 5.8138(2), b = 27.3496(8), c = 7.5663(2)Å, β = 103.059(3) • , and Z = 4). The vanadium(V) cation is in a pentagonal bipyramidal environment axially coordinated to the oxo group and equatorially to two hydroxylamido groups in a side-on fashion. The fifth equatorial binding site and the other apical position are occupied by an N and an O atom, respectively, from the methioninate anion acting as a bidentate ligand.

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“…The antifungal activity of the complexes is less than standard fungicides, namely, cycloheximide, carbendazim, and fluconazole (MIC values 53.12 mg mL À1 ). A comparison of the results of biological activity of the monooxovanadium(V) complexes with that of other reports [45][46][47][48][49][50][51][52][53][54][55] revealed the effectiveness of newly synthesized vanadium complexes as antimicrobial agents.…”

Section: Antifungal Activitymentioning

confidence: 96%

“…The biological activity of several vanadium complexes has been reported [45][46][47][48][49][50][51][52][53][54][55]. The ligand, 2-phenylphenol, and the newly synthesized monooxovanadium(V) complexes All the complexes possess more activity against S. aureus, with an MIC of 6.25-12.5 mg mL À1 , than the MIC shown for E. coli at 12.5-25 mg mL À1 .…”

Section: Antibacterial Activitymentioning

confidence: 97%

Monooxovanadium(V) 2-phenylphenoxides: synthesis, characterization, and antimicrobial potential

Sharma

Thakur

Chaudhry

2010

Journal of Coordination Chemistry

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Monooxovanadium(V)complexes of the composition VOCl 3Àn (L) n (where L ¼ 2-phenylphenoxide ion; n ¼ 1-3) (1-3) have been synthesized in quantitative yields by the reaction of VOCl 3 with 2-phenylphenol in toluene. The characterization of the complexes has been accomplished by elemental analysis, molar conductance measurements, IR, 1 H-NMR, electronic, mass spectral, and thermal studies. The ligands as well as the complexes have been screened for their in vitro antimicrobial activity against the pathogenic bacteria Escherichia coli and Staphylococcus aureus and fungi Candida albicans, Aspergillus niger, and Fusarium oxysporum by a twofold serial dilution. An increase in the biocidal activity was observed for the vanadium complexes. The minimum inhibitory concentration (MIC) values were 6.25-25 mg mL À1 for complexes, relative to that of the free ligand of 25-50 mg mL À1 .

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Synthesis and spectroscopic characterization of hydroxylamido/amino acid complexes of oxovanadium(V)

Cited by 13 publications

References 31 publications

NMR studies on interactions between diperoxovanadate and picolinamide-like ligands

NMR studies on interactions between diperoxovanadate and picolinamide-like ligands

Crystal and Molecular Structure of a New Hydroxylamido/Amino Acid Oxovanadium(V) Complex, [VO(NH2O)2(DL-methioninato)] · H2O

Monooxovanadium(V) 2-phenylphenoxides: synthesis, characterization, and antimicrobial potential

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