caa a22 4500 46319330X CHVBK 20180406164915.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10973-006-7682-3 doi (NATIONALLICENCE)springer-10.1007/s10973-006-7682-3 Transitionmetal complexes with uninegative bidentate Schiff base [Elektronische Daten] Synthetic, thermal, spectroscopic and coordination aspects [C. Modi, S. Patel, M. Patel] The present article describes the synthesis, structural features and thermal studies of the complexes of the type [M(SB)2(H2O)2]·nH2O [where HSB=pyridine-m-carboxaldene-o-aminobenzoic acid and M=Mn(II), Co(II), Ni(II), Cu(II), Zn(II) and Cd(II)]. The complexes have been characterized on the basis of elemental analyses, magnetic susceptibility measurements, (FTIR and electronic) spectra and thermal studies. The nature of the bonding has been discussed on the basis of infrared spectral data. Magnetic susceptibility measurements and electronic spectral data suggest a six-coordinated structure of these complexes. The complexes of Mn(II), Co(II), Ni(II), Cu(II) are paramagnetic, while Zn(II) and Cd(II) are diamagnetic in nature. The thermal decomposition of the complexes have been studied and indicates that not only the crystallization and coordinated water are lost but also that the decomposition of the ligand from the complexes is necessary to interpret the successive mass losses. The kinetic parameters such as order of reaction (n) and the energy of activation (E a) have been reported using Freeman-Carroll method. The entropy (S*), the pre-exponential factor (A), the enthalpy (H*) and the Gibbs free energy (G*) have been calculated. Springer-Verlag, 2006 divalent transition metal complexes nationallicence DSC studies nationallicence DTA studies nationallicence spectroscopic analyses nationallicence TG/DTG nationallicence uninegative bidentate Schiff base nationallicence Modi C. Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, 388 120, Gujarat, India aut Patel S. Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, 388 120, Gujarat, India aut Patel M. Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, 388 120, Gujarat, India aut Journal of Thermal Analysis and Calorimetry Springer Netherlands 87/2(2007-01-01), 441-448 1388-6150 87:2<441 2007 87 10973 https://doi.org/10.1007/s10973-006-7682-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-7682-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Modi C. Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, 388 120, Gujarat, India aut NATIONALLICENCE 700 1- Patel S. Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, 388 120, Gujarat, India aut NATIONALLICENCE 700 1- Patel M. Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, 388 120, Gujarat, India aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Springer Netherlands 87/2(2007-01-01), 441-448 1388-6150 87:2<441 2007 87 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer