Journal
RUSSIAN JOURNAL OF COORDINATION CHEMISTRY
Volume 35, Issue 7, Pages 526-533Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1070328409070100
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Funding
- Ministry of Commerce, Industry and Energy (Republic of Korea)
- Korea Foundation for International Cooperation of Science and Technology
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New iron (III) complexes of S-methyl-beta N-(5-methylpyrazole-3-yl)methylenedithiocarbazate, S-benzyl-beta-N-beta-(5-methylpyrazole-3-yl)methylenedithiocarbazate, 5-methyl-3-formylpyrazole-3-pyrrolidinylthiosemicarbazone, and 5-methyl-3-formylpyrazole-N-4-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 (xz) (2) d (yz) (2) d (xy) (1) configuration in the ground state.
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