Abstract
Neodymium complex with glycine, Nd(Gly)2Cl3·3H2O, was synthesized and characterized by IR spectra. The thermal stability of the complex was tested through TG and DTG and a possible mechanism of thermal decomposition was proposed. The heat capacities of the complex were measured by using an automated adiabatic calorimeter over the temperature range from T=(80 to 380)K, the thermodynamic functions, [HTâH298.15] and [STâS298.15], were calculated based on the heat capacity measurements. Two (solid+solid) phase transitions in the ranges of T=(170 to 247)K were observed with the peak temperatures of 184.896K and 231.217, respectively. The standard molar enthalpy of formation of [Nd(Gly)2Cl3·3H2O] was determined to be (â3081.3±1.1)kJ·molâ1 in terms of an isoperibol solution-reaction calorimeter.
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