Copper(II) and zinc(II) complexes with 2-formylpyridine-derived hydrazones

Despaigne, Angel A. Recio; Silva, Jéferson G. Da; Carmo, Ana Cerúlia M. do; Sives, F. R.; Piro, Oscar E.; Castellano, Eduardo E.; Beraldo, Heloísa

doi:10.1016/j.poly.2009.07.059

Cited by 90 publications

(55 citation statements)

References 18 publications

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“…Thiosemicarbazones and hydrazones were prepared according to procedures previously employed by our group [15,19,[31][32][33]. Melting points were determined using the digital Mettler Toledo FP90 equipment.…”

Section: Generalmentioning

confidence: 99%

Structural Studies and Investigation on the Activity of Imidazole-Derived Thiosemicarbazones and Hydrazones against Crop-Related Fungi

et al. 2013

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New imidazole derived thiosemicarbazones and hydrazones were prepared by condensation of 4(5)-imidazole carboxaldehyde, 4-(1H-imidazole-1-yl)benzaldehyde and 4-(1H-imidazole-1-yl)acetophenone with a thiosemicarbazide or hydrazide. All compounds were characterized by quantitative elemental analysis, IR and NMR techniques. Eight structures were determined by single crystal X-ray diffraction. The antifungal activities of the compounds were evaluated. None of the compounds exhibited significant activity against Aspergillus flavus and Candida albicans, while 4(5)-imidazolecarboxaldehyde thiosemicarbazone (ImT) and 4-(1H-imidazole-1-yl)benzaldehyde thiosemicabazone (4ImBzT) were highly and selectively active against Cladosporium cladosporioides. 4(5)-Imidazolecarboxaldehyde benzoyl hydrazone (4(5)ImPh), 4(5)-imidazolecarboxaldehydepara-chlorobenzoyl hydrazone (4(5)ImpClPh), 4(5)-imidazolecarboxaldehyde-paranitrobenzoyl hydrazone (4(5)ImpNO 2 Ph), 4-(imidazole-1-yl)acetophenone-para-chlorobenzoyl hydrazone (4ImAcpClPh) and 4-(imidazole-1-yl)acetophenone-para-nitrobenzoylhydrazone (4ImAcpNO 2 Ph) were highly active against Candida glabrata. 4(5)ImpClPh and 4(5)ImpNO 2 Ph were very effective against C. cladosporioides. In many cases, activity was superior to that of the reference compound nystatin.

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Section: Generalmentioning

confidence: 99%

Structural Studies and Investigation on the Activity of Imidazole-Derived Thiosemicarbazones and Hydrazones against Crop-Related Fungi

et al. 2013

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“…[29][30][31] In addition, new absorptions at 495-475 cm -1 and 450-350 cm -1 have been attributed to n(Sn-N imine ) and n(Sn-C) respectively; absorptions at 230-215 cm −1 were assigned to n (Sn-N py ), 25,28,40 and bands in the 405-390 cm -1 range have been assigned to n(Sn-O). An absorption at 260-250 cm -1 has been attributed to n(Sn-Cl).…”

Section: Infrared Spectramentioning

confidence: 95%

“…27,28 In recent works we started an investigation on metal complexes of pyridine-derived hydrazones. [29][30][31] In the present paper organotin(IV) complexes were prepared by reacting [Bu n SnCl 3 ] and [PhSnCl 3 ] with 2-acetylpyridine-benzoyl hydrazone (H2AcPh), 2-acetylpyridine para-chlorobenzoyl hydrazone (H2AcpClPh) and 2-acetylpyridine para-nitro-benzoyl hydrazone (H2AcpNO 2 Ph) (see Figure 1). The antimicrobial activity of the hydrazones and their organotin(IV) complexes was evaluated against Candida albicans and Staphylococcus aureus.…”

Section: Introductionmentioning

confidence: 99%

Organotin(IV) complexes with 2-acetylpyridine benzoyl hydrazones: antimicrobial activity

Despaigne¹,

Vieira²,

Mendes³

et al. 2010

J. Braz. Chem. Soc.

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“…The energy of LUMO is related to the electron affinity. The binding ability of the ligand to the metal increases with increasing HOMO energy values 47,48 . The calculations show that HL ligand has the highest HOMO level at -5.7658 eV and the lowest LUMO level at-2.2751 eV when compared to the obtained parameters for the NiH2 complex.…”

Section: Homo-lumo Energy Gap and Related Molecular Propertiesmentioning

confidence: 99%

Crystal Structure and DFT Calculation Studies of Ni (II) Cinnamaldehyde Thiosemicarbazone Complex

2015

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Slow evaporation of a dilute DMSO solution of the title compound at room temperature, provided a brown crystal of Ni(CMTSC)2DMSO suitable for X-Rays study (space group: (5)). Two Ni atoms were located on special positions providing two molecules of Ni(CMTSC)2 different for their torsion angles and intermolecular interactions. In both molecules, the thiosemicarbazone coordinates as an anionic ligand via the thiosemicarbazone moiety's azomethine nitrogen and thiolatosulphur in a square-planar geometry. In the aim of investigating structural features, Density Functional Theory calculations of both ligand and complex were fully optimised with respect to the energy using B3LYP level. The predicted geometry parameters are compared with their corresponding X-ray crystallographic data.

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Copper(II) and zinc(II) complexes with 2-formylpyridine-derived hydrazones

Cited by 90 publications

References 18 publications

Structural Studies and Investigation on the Activity of Imidazole-Derived Thiosemicarbazones and Hydrazones against Crop-Related Fungi

Structural Studies and Investigation on the Activity of Imidazole-Derived Thiosemicarbazones and Hydrazones against Crop-Related Fungi

Organotin(IV) complexes with 2-acetylpyridine benzoyl hydrazones: antimicrobial activity

Crystal Structure and DFT Calculation Studies of Ni (II) Cinnamaldehyde Thiosemicarbazone Complex

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