Low temperature heat capacities and thermodynamic properties of rare earth triisothiocyanate hydrates .2. Pr(NCS)(3)center dot 7H(2)O and Nd(NCS)(3)center dot 7H(2)O

被引：0

作者：

Tan, ZC

Takasuke, M

Hiroshi, S

Zhang, ZY

Yin, JZ

Jiang, BG

Sun, TS

机构：

[1] OSAKA UNIV,FAC SCI,MICROCALORIMETRY RES CTR,TOYONAKA,OSAKA 560,JAPAN

[2] NW UNIV XIAN,THERMOCHEM LAB,XIAN 710069,PEOPLES R CHINA

[3] SHANDONG UNIV,DEPT CHEM,JINAN 250100,PEOPLES R CHINA

来源：

SCIENCE IN CHINA SERIES B-CHEMISTRY | 1996年 / 39卷 / 03期

关键词：

heat capacity; thermodynamic functions; rare earth; Pr(NCS)(3)center dot 7H(2)O; Nd(NCS)(3)center dot TH2O;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Heat capacities of Pr(NCS)(3) . 7H(2)O and Nd(NCS)(3) . 7H(2)O have been measured from 13 to 300 K by using a fully automated adiabatic calorimeter. Schottky anomaly was observed for Pr(NCS)(3) . 7H(2)O below 50K. The polynomial equations for calculating the heat capacity values of the two compounds in the range of 13-300K were obtained by the least-squares fitting based on the experimental C-p data. The C-p values below 13K were estimated by using the Debye-Einstein and Schottky heat capacity functions. The standard molar thermodynamic functions were computed from 0 to 300K. The standard entropies and Gibbs energies of formation of the two compounds were also calculated.

引用

页码：276 / 284

页数：9

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