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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

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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 d 2 xz d 2 yz d 1 xy configuration in the ground state.

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Authors and Affiliations

  1. Postgraduate Department of Chemistry, Panskura Banamali College (Vidyasagar University), Midnapore, West Bengal, 721152, India

    P. Bera

  2. KRICT-EPFL Global Research Laboratory, Advanced Materials Division, Korea Research Institute of Chemical Technology, 19 Sinseongno, Yuseong, Daejeon, 305-600, South Korea

    P. Bera, I. C. Baek & S. I. Seok

  3. Department of Chemistry, University of Calcutta, 92 Acharya Prafulla Chandra Road, Calcutta, 700009, India

    N. Saha

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  1. P. Bera
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  2. I. C. Baek
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  3. S. I. Seok
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  4. N. Saha
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Correspondence to P. Bera.

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Bera, P., Baek, I.C., Seok, S.I. et al. 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. Russ J Coord Chem 35, 526–533 (2009). https://doi.org/10.1134/S1070328409070100

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  • DOI: https://doi.org/10.1134/S1070328409070100

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