Journal
TRANSITION METAL CHEMISTRY
Volume 25, Issue 6, Pages 648-658Publisher
SPRINGER
DOI: 10.1023/A:1007003432692
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A new potential tetradentate ligand, N-nicotinoyl-N'-2-furanthiocarbohydrazide (H(2)Nfth), and its complexes with VOIV, Mn-II, Fe-II,(III), Co-II, Ni-II, Cu-II and Zn-II have been prepared and characterized by elemental analyses, magnetic susceptibility measurements, u.v.-vis, i.r., n.m.r., ES+ and FAB mass spectral data. The room temperature e.s.r spectra of the VOIV and Fe-III complexes yield < g > values, characteristic of octahedral complexes. The Mossbauer spectra of [Fe(HNfth)(2)] and [Fe-2(Nfth)(3)] at room temperature and at 78 K suggest the presence of high-spin iron(II) and iron(III), respectively. The complexes are electrically insulating at room temperature, however, their conductivities increase as the temperature increases from 333-383 K, with a band gap of 0.46-0.77 eV, indicating their semiconducting behaviour. H(2)Nfth and its soluble complexes have been screened against several bacteria and fungi.
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