Published In

Physical Review B

Document Type

Article

Publication Date

5-1994

Subjects

X-ray diffraction, Phase-transfer catalysts -- Analysis, Fullerenes -- Properties, Calorimetry, Thermal analysis

Abstract

We have used differential scanning calorimetry and x-ray diffraction to study the crystalline phases of the 6,5-annulene isomer of C61H2. At 308 K the methylenated fullerenes are orientationally disordered in a face-centered cubic lattice with lattice parameter 14.19±0.02 Å. Below Tc=290 K the symmetry is lowered to Pa3¯, a simple-cubic structure. At 20 K the lattice parameter is 14.06±0.02 Å, with substantial statistical disorder remaining. The transition temperature in C61H2 is slightly higher than in C60O and higher still than in C60, but the three compounds exhibit orientationally ordering transitions between qualitatively similar phases.

Description

This is the publisher's final PDF. Article appears in Physical Review B (http://prb.aps.org/) and is copyrighted by APS Journals (http://publish.aps.org/). The paper can be found at the following URL: http://dx.doi.org/10.1103/PhysRevB.49.12572

Persistent Identifier

http://archives.pdx.edu/ds/psu/11171

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