Pressure-temperature phase diagram of the rotor-stator compound C60-cubane

A. Iwasiewicz-Wabnig, R. Röding, B. Sundqvist, É Kováts, I. Jalsovszky, S. Pekker

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3 Citations (Scopus)

Abstract

When the rotor-stator compound C60{dot operator}C8H8 is treated at temperatures above about 450 K under high-pressure conditions, fullerene-based copolymers are formed. Earlier results have shown the existence of two types of polymers, a "low-pressure" pseudo-cubic copolymer similar to that formed at atmospheric pressure, and a "high-pressure" phase tentatively identified as a pseudo-orthorhombic copolymer structurally based on the known low-temperature phase. In this communication we show that the reaction boundary between the polymers occurs at pressures near 1 GPa. From this result it follows that the slope of the cubic-orthorhombic phase line in the pristine material is 305 K GPa-1, significantly larger than the slope observed for the corresponding rotational transition in pure C60.

Original languageEnglish
Pages (from-to)208-212
Number of pages5
JournalSolid State Communications
Volume143
Issue number4-5
DOIs
Publication statusPublished - Jul 1 2007

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Keywords

  • A: Fullerenes
  • C: High pressure
  • C: Raman spectroscopy
  • C: X-ray diffraction

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Iwasiewicz-Wabnig, A., Röding, R., Sundqvist, B., Kováts, É., Jalsovszky, I., & Pekker, S. (2007). Pressure-temperature phase diagram of the rotor-stator compound C60-cubane. Solid State Communications, 143(4-5), 208-212. https://doi.org/10.1016/j.ssc.2007.05.029