Academic Journals Database
Disseminating quality controlled scientific knowledge

Synthesis, characterization and a thermal (TG-DSC) study of gadolinium and lutetium methanesulfonate coordination compounds with pyridine-N-oxide and 2-, 3- and 4-picoline-N-oxides

ADD TO MY LIST
 
Author(s): MARIADE F. V. DEMOURA | JIVALDO DO R. MATOS | ROBSON F. DE FARIAS

Journal: Journal of the Serbian Chemical Society
ISSN 0352-5139

Volume: 70;
Issue: 8-9;
Start page: 1041;
Date: 2005;
VIEW PDF   PDF DOWNLOAD PDF   Download PDF Original page

Keywords: gadolinium | lutetium | coordination compounds | thermogravimetry

ABSTRACT
The synthesis, characterization and a thermal (TG and DSC) study of the coordination compounds Gd(MS)3·(py-NO)2, Gd(MS)3·(2-picNO)2, Gd(MS)3·(3-picNO)2, Gd(MS)3·(4-picNO)2, Lu(MS)3·(py-NO)2·2H2O, Lu(MS)3·(2-picNO)1.5·H2O, Lu(MS)3·(3-picNO) and Lu(MS)3·(4-picNO)2 are reported (MS = methanesulfonate, py-NO = pyridine-N-oxide, 2-picNO, 3-picNo and 4-picNO are 2-, 3- and 4-picoline-N-oxides, respectively). The observed thermal stability trend is: 2-picNO < py-NO < 4-picNO < 3-picNO for Gd and 2-picNO < 4-picNO < 3-picNO < py-NO for Lu. It was shown that the release of ligand molecules (endothermic) is followed by the thermal degradation of the ligands (exothermic).
Affiliate Program     

Tango Rapperswil
Tango Rapperswil