Synthesis, characterisation and crystal structures of a few coordination complexes of nickel(II), cobalt(III) and zinc(II) with N′-[(2-pyridyl)methylene]salicyloylhydrazone Schiff base

Samanta, Brajagopal; Chakraborty, Joy; Shit, Shyamapada; Batten, Stuart Robert; Jensen, Paul R.; Masuda, Jason D.; Mitra, Samiran

doi:10.1016/j.ica.2006.12.019

Cited by 73 publications

(37 citation statements)

References 45 publications

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“…Simultaneously, the peak belongs to (N-N) was shifted to a higher frequency and appearing in the 966-1001 cm -1 range. The increment in the frequency of this peak is an obvious reference to the increasing in the double bond property is off-setting the lack of electron density through electron donation to the metal ions and further confirmed that the azomethine group participate in the chelation [33].…”

Section: Ir Spectramentioning

confidence: 58%

“…The increment in the frequency of (N-N) bond is an obvious reference to the increasing in the double bond property is off-setting the lack of electron density via electron donation to the metal ions and further confirmed that the azomethine group takes part in the chelation [33]. (iii) The shifting in the peak characteristic to phenolic hydroxy group and disappearing of the peak assigned to hydroxyl proton indicating that the deprotonated phenolic oxygen atom participates in the bonding.…”

Section: Ir Spectramentioning

confidence: 72%

“…In addition the presence of a sharp band at 3360 cm -1 could be referred to the stretching vibration of the phenolic hydroxy group [25]. The comparatively strong and medium peaks which lying at 3130, 1613, 1470 and 954 cm -1 corresponded to the amine (CH 2 -NH 7 ), azomethine [33], azo [34], and (N-N) [32] groups, respectively. The peak appeared at 1260 cm -1 is belong to the phenolic moiety [32].…”

Section: Ir Spectramentioning

confidence: 98%

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Synthesis, characterization and bioactivity ¬¬¬¬Zn2+, Cu2+, Ni2+, Co2+, Mn2+, Fe3+, Ru3+, VO2+ and UO22+ complexes of 2-hydroxy-5-((4-nitrophenyl)diazenyl)benzylidene)-2-(p-tolyl- amino)acetohydrazide

Shakdofa¹,

Al‐Hakimi²,

El‐Saied³

et al. 2017

Bull. Chem. Soc. Eth.

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ABSTRACT. Novel azo-acetohydrazide complexes ofwith 2-hydroxy-5-((4-nitrophenyl)diazenyl)benzylidene)-2-(p-tolylamino)acetohydrazide have been prepared. All the compounds were analytically and spectroscopically characterized by various techniques. The data of molar conductance indicated the prepared complexes are nonelectrolyte in nature except complexes (10) and (11). The spectroscopic data point out that the behavior of ligand towards metal ions are neutral or monobasic bidentate, and dibasic tridentate ligand linked to the metal ions through oxygen atom of ketonic or enolic carbonyl group, azomethine nitrogen atom and/or deprotonated phenolic group forming either octahedral or tetragonally distorted octahedral geometry. X-ray powder diffraction analysis of complexes (2) and (3) indicate that the complexes are crystalline in nature and have monoclinic structures. The microbicides activities of all compounds evaluated by well diffusion method versus Escherichia coli and Aspergillus niger at different concentration. The bioactivities data elucidated that as the concentration of the tested solutions increases the activities increase.

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Section: Ir Spectramentioning

confidence: 58%

Section: Ir Spectramentioning

confidence: 72%

Section: Ir Spectramentioning

confidence: 98%

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Synthesis, characterization and bioactivity ¬¬¬¬Zn2+, Cu2+, Ni2+, Co2+, Mn2+, Fe3+, Ru3+, VO2+ and UO22+ complexes of 2-hydroxy-5-((4-nitrophenyl)diazenyl)benzylidene)-2-(p-tolyl- amino)acetohydrazide

Shakdofa¹,

Al‐Hakimi²,

El‐Saied³

et al. 2017

Bull. Chem. Soc. Eth.

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“…Calc. for C 28 are attributed to the (N-H) vibrations of the hydrazide moieties. The band at 1210 cm -1 is assignable to the thione C=S function.…”

Section: Synthesis Of [Zn(hl) 2 ] 2dmf (2)mentioning

confidence: 99%

Synthesis and Crystal Structure of Anickel (II) and Zinc (II) Complex From 1,5-Bis [(2-Thiophenyl) Methylidene] Thiocarbonohydrazide

DjibyLO¹,

Diaw²,

Gaye³

et al. 2017

IOSR JAC

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“…When the neutral ligand molecule deprotonated it plays the role of the counterion. If it is coordinated to metal ions as an neutral ligand, some counterions are needed to balance the charge of its coordination compound [2,3]. The symmetrically independent unit consists of two deprotonated pabh moleculues, half water molecule and one Zn(II) ion with ZnN 4O2 coordination.…”

mentioning

confidence: 99%

Crystal structure of bis(pyridine-2-carboxaldehyde-2-hydroxybenzoyl hydrazone)zinc(II) semihydrate, Zn(C13H10N3O2)2 · 0.5 H2O

Wan¹,

Niu²,

Zheng³

et al. 2008

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of materialThe ligand pyridine-2-carboxaldehyde-2-hydroxybenzoylhydrazone (pabh) was prepared according to the literature procedure [1]. To the solution of pabh (0.048 g, 0.2 mmol) dissolved in 10 ml methanol was added dropwise 15 ml solution of methanol containing Zn(OOCCH 3)2 · 2H2O (0.022 g, 0.1mmol) with stirring and continuously stirred for 30 min. A solution of concentrated HCl and methanol (1:50, v/v) was added dropwise to the above mentioned solution with stirring until no precipitates were appeared. The reaction mixture was neutralized with 1mol/l NaOH to clear aqueous and filtered. With the filtrate slowly evaporating in ambient temperature for 30 days, yellow crystals were appeared. DiscussionThe ligand pyridine-2-carboxaldehyde-2-hydroxybenzoylhydrazone is usually coordinated to metal ions as tridentate chelate. When the neutral ligand molecule deprotonated it plays the role of the counterion. If it is coordinated to metal ions as an neutral ligand, some counterions are needed to balance the charge of its coordination compound [2,3]. The symmetrically independent unit consists of two deprotonated pabh moleculues, half water molecule and one Zn(II) ion with ZnN 4O2 coordination. Different bond lengths between Zn andgive evidence of distortion of the ideal octahedral symmetry. More significant distortion can be seen from the large range of bond angles around Zn metal center from 74.1°to 149.9°. Two nitrogen atoms (N3, N6) of two distinct pyridyl rings are located in the apical, two oxygen atoms (O1, O2) and two nitrogen atoms (N2, N5) are in the equatorial positions.

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Synthesis, characterisation and crystal structures of a few coordination complexes of nickel(II), cobalt(III) and zinc(II) with N′-[(2-pyridyl)methylene]salicyloylhydrazone Schiff base

Cited by 73 publications

References 45 publications

Synthesis, characterization and bioactivity ¬¬¬¬Zn2+, Cu2+, Ni2+, Co2+, Mn2+, Fe3+, Ru3+, VO2+ and UO22+ complexes of 2-hydroxy-5-((4-nitrophenyl)diazenyl)benzylidene)-2-(p-tolyl- amino)acetohydrazide

Synthesis, characterization and bioactivity ¬¬¬¬Zn2+, Cu2+, Ni2+, Co2+, Mn2+, Fe3+, Ru3+, VO2+ and UO22+ complexes of 2-hydroxy-5-((4-nitrophenyl)diazenyl)benzylidene)-2-(p-tolyl- amino)acetohydrazide

Synthesis and Crystal Structure of Anickel (II) and Zinc (II) Complex From 1,5-Bis [(2-Thiophenyl) Methylidene] Thiocarbonohydrazide

Crystal structure of bis(pyridine-2-carboxaldehyde-2-hydroxybenzoyl hydrazone)zinc(II) semihydrate, Zn(C13H10N3O2)2 · 0.5 H2O

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