The crystal structures of two solid phases of 4-cyano-4'-ethyl-biphenyl
In: Zeitschrift für Kristallographie, Jg. 202 (1992), Heft 1-2, S. 7-16
academicJournal
- print, 11 ref
Zugriff:
4-cyano-4'-ethyl-biphenyl (2 CB) undergoes a reversible distortive phase transition at 290.8 K (transition enthalpy 0.9 kJ/mol). The crystal and molecular structures of both phases were determined. Below the transition point 2 CB crystallizes in the monoclinic space group P21/c (phase I) with a = 8.42(1), b = 5.94(1), c = 23.15(2) Å, β = 92.93(1)° (T = 223 K), Z = 4, 1328 non-zero reflections, final R = 0.052, Rw = 0.047. The higher temperature modification (phase II) is also monoclinic, space group P21 with a = 8.589(2), b=5.864(1), c=11.835(3) Å, β=92.42(1)° (T=298K), Z=2,795 non-zero reflections, final R=0.076, Rw=0.067.
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The crystal structures of two solid phases of 4-cyano-4'-ethyl-biphenyl
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Autor/in / Beteiligte Person: | HAASE, W ; LOUB, J ; PAULUS, H |
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Zeitschrift: | Zeitschrift für Kristallographie, Jg. 202 (1992), Heft 1-2, S. 7-16 |
Veröffentlichung: | München: Oldenbourg, 1992 |
Medientyp: | academicJournal |
Umfang: | print, 11 ref |
ISSN: | 0044-2968 (print) |
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