THERMODYNAMIC PROPERTIES OF AMMONIUM HALOPLATINATES .2. HEAT-CAPACITY AND THERMODYNAMIC FUNCTIONS OF DEUTERATED AMMONIUM HEXACHLOROPLATINATE (ND4)2PTCL6 AT TEMPERATURES FROM 5 K TO 350 K

被引：31

作者：

WEIR, RD

WESTRUM, EF

机构：

[1] Department of Chemistry and Chemical Engineering, Royal Military College of Canada, Kingston

[2] Department of Chemistry, University of Michigan, Ann Arbor

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 1991年 / 23卷 / 07期

关键词：

D O I：

10.1016/S0021-9614(05)80203-4

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The heat capacity of deuterated ammonium hexachloroplatinate (ND4)2PtCl6 was measured at temperatures from 5 K to 350 K by adiabatic calorimetry. One λ-shaped anomaly, absent in the undeuterated salt, was found in the curve for heat capacity against temperature. This λ-shaped transition reaches its maximum Cp,m ≈ 59.3·R at (27.2±0.05) K with ΔtrsSom = (1.216±0.004)·R, characteristic of an order-disorder transition. Smoothed values of the standard thermodynamic quantities for pure (ND4)2PtCl6 are tabulated at temperatures up to 350 K. © 1991 Academic Press Limited All rights reserved.

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页码：653 / 665

页数：13

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