The thermodynamic functions of fullerene derivative (t-Bu)12C60 over the temperature range from T → 0 to 420 K

被引：1

作者：

Markin, A. V. ^{[1
]}

Ruchenin, V. A. ^{[1
]}

Smirnova, N. N. ^{[1
]}

Gorina, E. A. ^{[2
]}

Titova, S. N. ^{[2
]}

Kalakutskaya, L. V. ^{[2
]}

Domrachev, G. A. ^{[2
]}

机构：

[1] Nizhnii Novgorod State Univ, Inst Chem, Nizhnii Novgorod 603950, Russia

[2] Russian Acad Sci, Razuvaev Inst Organometall Chem, Nizhnii Novgorod 603950, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2009年 / 83卷 / 12期

基金：

俄罗斯基础研究基金会;

关键词：

C-60; TRANSITION;

D O I：

10.1134/S003602440912005X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The temperature dependence of heat capacity C (p) (o) = f(T) of fullerene derivative (t-Bu)(12)C-60 has been measured by a adiabatic vacuum calorimeter over the temperature range T = 6-350 K and by a differential scanning calorimeter over the temperature range T = 330-420 K for the first time. The low-temperature (T a parts per thousand currency sign 50 K) dependence of the heat capacity was analyzed based on Debye's the heat capacity theory of solids and its fractal variant. As a consequence, the conclusion about structure heterodynamicity is given. The experimental results have been used to calculate the standard thermodynamic functions C (p) (o) (T), H (o)(T)-H (o)(0), S (o)(T) and G (o)(T) - H (o)(0) over the range from T -> 0 to 420 K. The standard entropy of formation at 298.15 K of fullerene derivative under study was calculated. The temperature of decomposition onset of derivative was determined by differential scanning calorimetery and thermogravimetric analysis. The standard thermodynamic characteristics of (t-Bu)(12)C-60 and C-60 fullerite were compared.

引用

页码：2032 / 2038

页数：7

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