Journal ArticleDOI
Synthesis and spectroscopic characterization of new iron(III) complexes of S-Alkyl/Aryl dithiocarbazates of 5-methyl-3-formylpyrazole and 5-methyl-3-formylpyrazolyl-thiosemicarbazones
TLDR
In this article, the low-spin distorted octahedral structure of the iron (III) complexes containing two uninegative tridentate ligands with NNS donor sites was revealed.Abstract:
New iron (III) complexes of S-methyl-βN-(5-methylpyrazole-3-yl)methylenedithiocarbazate, S-benzyl-β-N-β-(5-methylpyrazole-3-yl)methylenedithiocarbazate, 5-methyl-3-formylpyrazole-3-pyrrolidinylthiosemicarbazone, and 5-methyl-3-formylpyrazole-4N-benzylthiosemicarbazone have been synthesized and physicochemically characterized by elemental analyses, magnetic moment measurements (polycrystalline state), electronic, IR, and EPR spectra, as well as conductance measurements, are used to confirm the coordination geometry. The spectral studies reveal the low-spin distorted octahedral structure of the iron (III) complexes containing two uninegative tridentate ligands with NNS donor sites, where the EPR data confirm the presence of a spin — paired iron (III) with dxz2dyz2dxy1 configuration in the ground state.read more
Citations
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Journal ArticleDOI
Catechol oxidase mimetic activity of copper(I) complexes of 3,5-dimethyl pyrazole derivatives: Coordination behavior, X-ray crystallography and electrochemical study
Ananyakumari Santra,Gopinath Mondal,Moumita Acharjya,Pradip Bera,Anangamohan Panja,Tarun Kanti Mandal,Partha Mitra,Pulakesh Bera +7 more
TL;DR: In this article, the deuterium kinetic isotope effect in the catalytic oxidation of 3,5-DTBC by O2 was investigated, showing that the hydrogen atom transfer in the rate-determining step from the substrate hydroxy group to the metal-bound superoxo species.
Journal ArticleDOI
Complexes of a diacetylmonoxime Schiff base of S-methyldithiocarbazate (H2damsm) with Fe(III), Ru(III)/Ru(II), and V(IV); catalytic activity and X-ray crystal structure of [Fe(Hdamsm)2]NO3·H2O
TL;DR: In this article, the properties of the complex [M(Hdamsm)2]X·H2O (M = Fe, X = NO3; M = Ru, X, NO3, Ru = Cl, Cl = Br, Br = Br), and VO(Haddamm)(acac) = acetylacetone were investigated by cyclic voltammetry.
Journal ArticleDOI
Synthesis, in vitro evaluation of antibacterial, antifungal and larvicidal activities of pyrazole/pyridine based compounds and their nanocrystalline MS (M = Cu and Cd) derivatives
Gopinath Mondal,Harekrishna Jana,Moumita Acharjya,Ananyakumari Santra,Pradip Bera,Abhimanyu Jana,Anangamohan Panja,Pulakesh Bera +7 more
TL;DR: Present study revealed that 8 shows best antibacterial activity among the present reported compounds, and an excellent antifugal activity is shown by 12 emerging to be a better antibiotic than standard fluconazole.
References
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Thiosemicarbazone complexes of copper(II): structural and biological studies
Douglas X. West,Anthony E. Liberta,Subhash Padhye,Rajeev C. Chikate,Pramila Sonawane,Avinash S. Kumbhar,Ratnamala Yerande +6 more
TL;DR: In this paper, the authors discuss the biological importance of copper thiosemicarbazone complexes and their applications in the field of chemical engineering, such as chemical synthesis, chemical engineering and electrical engineering.
Journal ArticleDOI
Metal complexes of sulphur-nitrogen chelating agents
Book ChapterDOI
Structural and physical correlations in the biological properties of transition metal heterocyclic thiosemicarbazone and S -alkyldithiocarbazate complexes
TL;DR: The nature of metal complexes of heterocyclic thiosemicarbazones reported in the literature through 1989 have been reviewed with an emphasis on variations in stoichiometry and stereochemistry as discussed by the authors.
Journal ArticleDOI
Antifungal and antitumor activity of heterocyclic thiosemicarbazones and their metal complexes: current status.
TL;DR: The reduction potential of the thiosemicarbazone ligand in a Cu(II) complex, the strength of the ligand field and various spectral properties can be correlated to the inhibitory activity.
Journal ArticleDOI
Magnetic spectroscopic (EPR, ESEEM, Mössbauer, MCD and NMR) studies of low-spin ferriheme centers and their corresponding heme proteins
TL;DR: In this article, the effect of axial ligands and porphyrin substituents on the electronic ground state and detailed magnetic properties of these systems themselves, as well as how they relate to the properties of heme proteins were investigated.