- Synthesis and characterization of manganese, copper and zinc complexes derived from Schiff - base ligand
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A Schiff base has been prepared by the condensation of 4- amino -3,5-dimercapto, 1,2,4-triazole with 2,4-diaminobenzaldehyde. The ligand has been used for complexation with Mn(II), Cu(II) and Zn(II) metal ions. The complexes have been characterized by their elemental analysis, molar conductivity, magnetic susceptibility, IR spectra and electronic spectra. The very low value of molar conductivity of complexes shows their non-electrolytic nature. The comparison of IR spectra of complexes with that of free ligand reveals that the ligand is coordinated through azomethine nitrogen and deprotonated thiol sulphur forming five membered heterochelates. The magnetic moment values and electronic spectral bands clearly indicate the octahedral geometry around metal ions in complexes.
- Kumar, Birendra,Kumar, Bishwanath,Kumar, Sunny,Kumar, Deepak,Sharma, Shivadhar
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- Magnetic and spectral study of some mixed ligand complexes
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Complexes of Fe(II), Co(II) and Ni(II) metal ions have been prepared with 4-(phydroxyl benzalidimino)-3,5-dimercapto-1,2,4-triazole (LH) as primary ligand while pyridine has been used as secondary ligand. The analytical data suggest 1:2 (M:L) stoichiometric composition of complexes . The electrical conductivity indicates their non- electrolytic nature. The magnetic and spectral character favour octahedral geometry of Fe(II), Co(II) and Ni(II) complexes.
- Kumar, Birendra,Kumar, Bishwanath,Kumar, Rajeev
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p. 1827 - 1830
(2016/01/25)
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- Regioselective synthesis of 3-sulfanyl-5H-naphtho[2,3-e][1,3,4] triazino[3,4-b][1,3,4]thiadiazole-6,11-dione and its derivatives
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Regioselective synthesis of novel 3-sulfanyl-5H-naphtho[2,3-e][1,3,4] triazino[3,4-b][1,3,4]thiadiazole-6,11-dione (3) has been achieved by the condensation of 2-bromo-3-hydroxynaphthalene-1,4-dione (1) with 4-amino-4H-1,2,4-triazole-3,5-dithiol (2) in DM
- Srinivas, Vakiti,Rao, Vedula Rajeswar
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p. 99 - 104
(2012/01/12)
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- A highly regioselective synthesis of 8-hydroxy-3-sulfanyl-7-undecyl-5H-[1, 2,4]triazolo[3,4-b][1,3,4]benzothiadiazole-6,9-dione and its derivative
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Regioselective synthesis of novel 8-hydroxy-3-sulfanyl-7-undecyl-5 H-[1,2,4]triazolo[3,4-b][1,3,4]benzothiadiazole-6,9-dione (3) by condensation of 2-bromo-3,6-dihydroxy-5-undecyl-1,4-benzoquinone (bromoembelin) (1) with 4-amino-4 H-1,2,4-triazole-3,5-dit
- Vakiti, Srinivas,Rao, Vedula Rajeswar
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p. 80 - 82
(2010/06/19)
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