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Original Articles

Synthesis, characterization and thermal (tg-dsc) study of yttrium methanesulfonate coordination compounds with pyridine N-oxide and 2-,3- and 4-picoline N-oxides

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Pages 747-753 | Received 05 Aug 2003, Accepted 19 Apr 2004, Published online: 20 Aug 2006
 

Abstract

The synthesis, characterization and thermal (TG and DSC) study of the coordination compounds Y(MS)3A(py-NO)2AH2O, Y(MS)3A(2-picNO)3, Y(MS)3A(3-picNO)2 and La(MS)3A(4-picNO)2 are reported (MS = methanesulfonate, py-NO = pyridine N-oxide, and 2-picNO, 3-picNO and 4-picNO are 2-, 3- and 4-picoline N-oxides, respectively). The observed thermal stability trend is: 2-picNO ≈ 4-picNO< 3-picNO< py-NO. Release of ligand molecules (endothermic) is followed by thermal degradation of the ligands (exothermic) with an increase in the exothermic values from 2-picNO to 4-picNO.

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