Synthetic,spectroscopic and thermal aspects of some heterochelates |
| |
Authors: | C. K. Modi M. N. Patel |
| |
Affiliation: | (1) Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat, 388 120, India |
| |
Abstract: | The present article describes the synthesis, structural features and thermal studies of heterochelates of the type [M(SB)(benen)(H2O)]·nH2O [where H2SB=(Z)-2-(2,2,2-trifluoro-1-(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)ethylideneamino)benzoic acid, benen=bis(benzylidene)ethylenediamine and M=Mn(II), Co(II), Ni(II), Cu(II), Zn(II) and VO(IV)]. The Schiff base (H2SB) have been characterized on the basis of elemental analysis, IR, 1H and 13C NMR. The heterochelates have been characterized on the basis of elemental analyses, magnetic measurements, solid state conductivity measurements, IR, reflectance spectra, and thermal studies. The FAB mass spectrum of [Co(SB)(benen)(H2O)] has been carried out. The kinetic parameters such as order of reaction (n) and the energy of activation (E a) have been reported using Freeman-Carroll method. The pre-exponential factor (A), the activation entropy (ΔS #), the activation enthalpy (ΔH #) and the free energy of activation (ΔG #) have been calculated. |
| |
Keywords: | DSC studies Freeman-Carroll method heterochelates Schiff bases spectroscopic TG/DTG studies |
本文献已被 SpringerLink 等数据库收录! |
|