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Structure and phase transition of the 6,5-annulene isomer ofC61H2
1994
Physical Review B (Condensed Matter)
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We have used di8'erential scanning calorimetry and x-ray diRraction to study the crystalline phases of the 6, 5-annulene isomer of C6&H2. At 308 K the methylenated fullerenes are orientationally disordered in a face-centered cubic lattice with lattice parameter 14.19 6 0.02 A. Below T, = 290 K the symmetry is lowered to Pa3, a simple cubic structure. At 20 K the lattice parameter is 14.06+0.02 A, with substantial statistical disorder remaining. The transition temperature in CsqH2 is slightly
doi:10.1103/physrevb.49.12572
pmid:10010160
fatcat:a6oqyatghncgzajabfmfvjcljm