Potentiometric study of binary complexes of methyl 2-pyridyl ketone oxime, phenyl 2-pyridyl ketone oxime and diacetyl monooxime with some transition and heavy metal ions in aqueous solution

Shokrollahi, Ardeshir; Ghaedi, Mehrorang; Rajabi, Hamid Reza; Niband, M.S.

doi:10.1016/j.saa.2008.01.021

Cited by 43 publications

(22 citation statements)

References 34 publications

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“…The inspection of data accumulated in the literature confirms this assumption The stability constants orders of these three oximes complexes with cited metal ions have relatively good compatibilities with Irving-Williams series 23 . Relative deviation from Irving-Williams series has been seen in in literature about some of other oximes 25 .…”

Section: Stability Constants Of Binary Complexesmentioning

confidence: 87%

Potentiometric Study of Complexation Between Three Oxime Derivatives and Some Metal Ions in Water-Dioxane Mixed Solvent

Shokrollahi

Haghighi²

2012

Chem Sci Trans

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Abstract:The complexation equilibria of oximes including 1-phenyl-2-(quinodin-2-yl) ethanoneoxime (pqeo), 2-acetophenone oxime (apo) and 3-nitro benzaldoxime (nbo) with some transition and heavy metal ions such as Cu , UO 2 2+ and La 3+ were studied by potentiometric method in water-dioxane mixed solution. All of the titration steps were carried out at 25.0±0.1 ˚C and ionic strength (µ) of 0.1 M supported by KNO 3 . The overall stability constants logβ of respective species were evaluated by computer refinement of the corresponding potentiometric pH titration data using BEST computer program. The corresponding distribution diagrams were depicted as a function of pH by using HySS2009 program. The most likely species were obtained from distribution diagrams and the effect of the oximes structures on the stability constant values were investigated.

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Section: Stability Constants Of Binary Complexesmentioning

confidence: 87%

Potentiometric Study of Complexation Between Three Oxime Derivatives and Some Metal Ions in Water-Dioxane Mixed Solvent

Shokrollahi

Haghighi²

2012

Chem Sci Trans

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“…The details are described elsewhere [23][24][25][26][27] . A standard carbonate-free NaOH solution (0.1042 mol L À1 ) was used in all titrations.…”

Section: Potentiometric Equilibrium Measurementsmentioning

confidence: 99%

Synthesis, X-ray crystal structure, thermal and solution studies of a centrosymmetric metal–organic polymer based on proton transfer methodology

Eshtiagh‐Hosseini

Hassanpoor

Alfi

et al. 2010

Journal of Coordination Chemistry

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A 3-D metal-organic coordination polymer based on pyrazine-2,3-dicarboxylic acid (pzdcH 2 ) formulated as {[Mn(pzdc)(H 2 O) 2 ] Á 2H 2 O} n (1), was obtained by the treatment of MnCl 2 Á 6H 2 O with pzdcH 2 , 8-hydroxy quinoline (8-HQ), and 2-amino-4-methyl pyridine (ampy). In this study, we describe the synthesis, elemental analysis, IR spectroscopy, TG analysis, and single X-ray diffraction. The X-ray single crystal structure reveals that the chemical environment around each Mn(II) is a distorted octahedral by participating one nitrogen, five oxygens from three (pzdc) 2À and two water molecules, O 5 MnN. The centrosymmetric 1-D ladder-like structure of 1 is bridged by oxygens of (pzdc) 2À, and Mn-pzdc-Mn bonds are the rungs for our ladder structure. In the crystal structure, intermolecular O-H Á Á Á O hydrogen bonds result in the formation of a supramolecular structure, effective for the stabilization of the structure. The thermal decomposition of 1 indicates that it is quite thermally stable. The protonation constants of ampy, 8-HQ and pzdcH 2 as the building blocks of proton transfer systems including pzdcH 2 -ampy and pzdcH 2 -8-HQ and the corresponding stability constants of these systems were determined by potentiometric study. The stoichiometry and stability constants of complexes of pzdcH 2 -ampy and pzdcH 2 -8-HQ with Mn 2þ were investigated by this method in aqueous solution. The results obtained from solution study are comparable with the solid state results.

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“…Because they complex with several transition and heavy metal ions, such as Co 2+ , Ni 2+ , Zn 2+ , Pb 2+ , Fe 2+ , Fe 3+ , Cr 3+ , and La 3+ , some oximes, including methyl 2‐pyridyl ketoxime and phenyl 2‐pyridyl ketoxime, have been used for trace metal determinations in biological samples (Soylak et al ., 2001; Shokrollahi et al ., 2008). Some oximes are beneficial because of antifungal activities, which suppress disease development in plants including the pea (Banerjee & Dureja, 2010), and antimicrobial effects against C. albicans (Koca et al ., 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Some oximes are beneficial because of antifungal activities, which suppress disease development in plants including the pea (Banerjee & Dureja, 2010), and antimicrobial effects against C. albicans (Koca et al ., 2005). Interestingly, oxime metal chelates exhibit higher antimicrobial activities than the free ligands (Shokrollahi et al ., 2008; Koumousi et al ., 2012). In fact, oxime‐induced insecticidal, miticidal, and nematocidal activities may be due to their complexation with the binuclear Mn 2+ cluster of arginases and subsequent enzyme inactivations (Moali et al ., 2000).…”

Section: Introductionmentioning

confidence: 99%

Phenyl 2‐pyridyl ketoxime induces cellular senescence‐like alterations via nitric oxide production in human diploid fibroblasts

et al. 2015

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SummaryPhenyl‐2‐pyridyl ketoxime (PPKO) was found to be one of the small molecules enriched in the extracellular matrix of near‐senescent human diploid fibroblasts (HDFs). Treatment of young HDFs with PPKO reduced the viability of young HDFs in a dose‐ and time‐dependent manner and resulted in senescence‐associated β‐galactosidase (SA‐β‐gal) staining and G2/M cell cycle arrest. In addition, the levels of some senescence‐associated proteins, such as phosphorylated ERK1/2, caveolin‐1, p53, p16ink4a, and p21waf1, were elevated in PPKO‐treated cells. To monitor the effect of PPKO on cell stress responses, reactive oxygen species (ROS) production was examined by flow cytometry. After PPKO treatment, ROS levels transiently increased at 30 min but then returned to baseline at 60 min. The levels of some antioxidant enzymes, such as catalase, peroxiredoxin II and glutathione peroxidase I, were transiently induced by PPKO treatment. SOD II levels increased gradually, whereas the SOD I and III levels were biphasic during the experimental periods after PPKO treatment. Cellular senescence induced by PPKO was suppressed by chemical antioxidants, such as N‐acetylcysteine, 2,2,6,6‐tetramethylpiperidinyloxy, and L‐buthionine‐(S,R)‐sulfoximine. Furthermore, PPKO increased nitric oxide (NO) production via inducible NO synthase (iNOS) in HDFs. In the presence of NOS inhibitors, such as L‐NG‐nitroarginine methyl ester and L‐NG‐monomethylarginine, PPKO‐induced transient NO production and SA‐β‐gal staining were abrogated. Taken together, these results suggest that PPKO induces cellular senescence in association with transient ROS and NO production and the subsequent induction of senescence‐associated proteins.

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Potentiometric study of binary complexes of methyl 2-pyridyl ketone oxime, phenyl 2-pyridyl ketone oxime and diacetyl monooxime with some transition and heavy metal ions in aqueous solution

Cited by 43 publications

References 34 publications

Potentiometric Study of Complexation Between Three Oxime Derivatives and Some Metal Ions in Water-Dioxane Mixed Solvent

Potentiometric Study of Complexation Between Three Oxime Derivatives and Some Metal Ions in Water-Dioxane Mixed Solvent

Synthesis, X-ray crystal structure, thermal and solution studies of a centrosymmetric metal–organic polymer based on proton transfer methodology

Phenyl 2‐pyridyl ketoxime induces cellular senescence‐like alterations via nitric oxide production in human diploid fibroblasts

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