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

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.

Keywords:

• Yttrium
• Coordination compounds
• Thermogravimetry