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2010 | 8 | 2 | 291-299
Tytuł artykułu

Metallation of tetradentate N2O2 Schiff base with Mn(II), Co(II), Cu(II) and Zn(II): synthesis, characterization and formation constants measurement

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Four Schiff base ligands, salabza-H2 = N,N′-bis(salicylidene)-2-aminobenzylamine, were synthesized by condensation of one mole of 2-aminobenzylamine and two moles of salicylaldehyde and/or two moles of substituted salicylaldehyde (5-OMe, 5-Br, 5-NO2). All the four Schiff bases and their Mn(II), Co(II), Cu(II) and Zn(II) complexes are characterized by UV-Vis, FT-IR, 1H NMR spectroscopy, mass spectrometry and elemental analysis. The formation constants and the Gibbs free energies were measured spectrophotometrically for 1:1 complexes in methanol in constant ionic strength (I = 0.1 mol dm−3 NaClO4) and at 25°C. The data refinement was carried out with the SQUAD program. The trend of formation constants of H2L1 with M(II) follows the order: Mn(II) (3.97) Also, the trend of formation constants of ligand toward a given metal (for example Mn) is as follows: H2L1 (p-OMe) (3.97) > H2L2 (p-H) (3.65) > H2L3 (p-Br) (3.37) > H2L4 (p-NO2) (3.04) [...]
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Wydawca

Czasopismo
Rocznik
Tom
8
Numer
2
Strony
291-299
Opis fizyczny
Daty
wydano
2010-04-01
online
2010-03-23
Twórcy
  • Chemistry Department, College of Sciences, Shiraz University, Shiraz, 71454, I. R. Iran, asadi@susc.ac.ir
  • Chemistry Department, College of Sciences, Shiraz University, Shiraz, 71454, I. R. Iran
  • Chemistry Department, Faculty of Sciences, Persian Gulf University, Bushehr, 75169, I. R. Iran
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-009-0147-3
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