Low-temperature heat capacity and thermal decomposition of crystalline [Er-2(His center dot H+)(H2O)8](ClO4)(6)center dot 4H(2)O

Lan XX; Tan ZC; Liu BP; Nan ZD; Sun LX; Xu F

Thermochimica Acta, Vol.416, No.1-2, 55-58, 2004

DOI10.1016/j.tca.2003.11.032 Export Citation

Low-temperature heat capacity and thermal decomposition of crystalline [Er-2(His center dot H+)(H2O)8](ClO4)(6)center dot 4H(2)O

Lan XX, Tan ZC, Liu BP, Nan ZD, Sun LX, Xu F

The heat capacities of rare earth complex with amino acid histidine, [Er-2(His.H+)(H2O)(8)](ClO4)(6).4H(2)O, were measured with an automatic adiabatic calorimeter from 79 to 320 K. It was found that there was a sudden increment in heat capacity within the temperature range 182-190 K. Thermal decomposition behavior of the complex in nitrogen atmosphere was studied by thermogravimetric (TG) analysis, and a possible decomposition mechanism was suggested according to TG-DTG results. (C) 2003 Elsevier B.V. All rights reserved.

Keywords:adiabatic calorimeter;heat capacity;histidine rare earth complex;TG analysis;thermal decomposition