caa a22 4500 463190823 CHVBK 20180406164908.0 cr unu---uuuuu 170326e20070701xx s 000 0 eng 10.1007/s10973-005-7477-y doi (NATIONALLICENCE)springer-10.1007/s10973-005-7477-y Syntheses and spectrothermal studies of triethanolamine complexes of Co(II), Ni(II), Cu(II) and Cd(II) squarates [Elektronische Daten] [O. Yeşilel, H. Ölmez] The triethanolamine complexes, [M(tea)2]sq·nH2O, (n=2 for Co(II), n=0 for Ni(II), Cu(II) and n=1 for Cd(II), tea=triethanolamine, sq2−=squarate), have been synthesized and characterized by elemental analyses, magnetic susceptibility and conductivity measurements, UV-Vis and IR spectra, and thermal analyses techniques (TG, DTG and DTA). The Co(II), Ni(II) and Cu(II) complexes possess octahedral geometry, while the Cd(II) complex is monocapped trigonal prismatic geometry. Dianionic squarate behaves as a counter ion in the complexes. The thermal decomposition of these complexes takes place in three stages: (i) dehydration, (ii) release of the tea ligands and (iii) burning of organic residue. On the basis of the first DTGmax of the decomposition, the thermal stability of the anhydrous complexes follows the order: Ni(II), 289°C>Co(II), 230°C>Cu(II), 226°C>Cu(II), 170°C in static air atmosphere. The final decomposition products — the respective metal oxides — were identified by FTIR spectroscopy. Springer Science+Business Media LLC, 2007 squaric acid nationallicence thermal decomposition nationallicence triethanolamine complexes nationallicence Yeşilel O. Department of Chemistry, Faculty of Arts and Sciences Eskişehir Osmangazi University, 26480, Eskişehir, Turkey aut Ölmez H. Department of Chemistry, Faculty of Arts and Sciences Ondokuz Mayıs University, 55139, Kurupelit-Samsun, Turkey aut Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 89/1(2007-07-01), 261-265 1388-6150 89:1<261 2007 89 10973 https://doi.org/10.1007/s10973-005-7477-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-005-7477-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yeşilel O. Department of Chemistry, Faculty of Arts and Sciences Eskişehir Osmangazi University, 26480, Eskişehir, Turkey aut NATIONALLICENCE 700 1- Ölmez H. Department of Chemistry, Faculty of Arts and Sciences Ondokuz Mayıs University, 55139, Kurupelit-Samsun, Turkey aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 89/1(2007-07-01), 261-265 1388-6150 89:1<261 2007 89 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer