期刊
CHEMICAL PHYSICS LETTERS
卷 523, 期 -, 页码 74-77出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2011.12.026
关键词
-
资金
- European Community [FP7/2007-2013, 212311]
We present a working example of phase recognition by lattice phonon Raman spectroscopy, a technique which has proved to be a powerful tool for identifying new polymorphs. The spectra show that a newly resolved triclinic structure of the organic semiconductor dibenzo-tetrathiafulvalene ( DB-TTF) is one of its four polymorphic modifications, labeled the delta-phase, which was previously identified only from spectroscopic data. The now available XRD data allow for the computation of the minimum potential energy structure. Calculated density and energy of the triclinic polymorph are found to be very close to the previously identified beta polymorph. These similarities account for the often encountered co-existence of the beta and d crystal phases. (C) 2011 Elsevier B.V. All rights reserved.
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