Phase transformations in pressure polymerized C60

被引：29
|
作者：
Korobov, MV
Senyavin, VM
Bogachev, AG
Stukalin, EB
Davydov, VA
Kashevarova, LS
Rakhmanina, AV
Agafonov, V
Szwarc, A
机构：
[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119899, Russia
[2] RAS, Inst High Pressure Phys, Troitsk 142190, Moscow Dist, Russia
[3] Univ Tours, Chim Phys Lab, F-37200 Tours, France
[4] Univ Paris 09, Lab Chim Phys Mat Amorphes, F-91405 Orsay, France
来源：
CHEMICAL PHYSICS LETTERS | 2003年 / 381卷 / 3-4期
关键词：
D O I：
10.1016/j.cplett.2003.10.011
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：
Differential Scanning Calorimetry and infra-red spectroscopy have been used to study the depolymerization of the two pressure polymerized phases Of C-60, i.e., rhombohedral (R) and orthorhombic (0) into monomeric C-60 at p = 1 atm. The depolymerization enthalpies obtained were 10.3 +/- 0.5 and 20.1 +/- 0.6 kJ/mol for R-, O-phases, respectively. The R-phase, prepared at 1025-1050 K and 6 GPa ('magnetic carbon') demonstrated the depolymerization behaviour, similar to the typical R-phase. Part of the p-T-phase diagram Of C-60 was sketched in, using experimental and literature data. (C) 2003 Elsevier B.V. All rights reserved.
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收藏
页码：410 / 415
页数：6
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