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The influence of polytypic structures on the M011→M101 solid–solid phase transition of n-C36H74: An application of the oblique infrared transmission method.
- Source :
-
Journal of Chemical Physics . 7/8/2004, Vol. 121 Issue 2, p1121-1128. 8p. 7 Diagrams, 1 Chart, 7 Graphs. - Publication Year :
- 2004
-
Abstract
- The molecular displacements on the M011→M101 phase transition of n-hexatriacontane (n-C36H74) have been investigated with an IR microscope designed for the oblique infrared transmission method. It has been clarified that two polytypic structures of the M011 modification, single-layered structure (Mon) and double-layered one (Orth II), both transform to the M101 modification of single-layered structure with their respective mechanisms. On the M011(Mon)→M101 transition, the inclination direction of molecular axis is changed by 90° through an intermediate state in which the molecular chain is set perpendicular to the basal plane of the single crystal. On the other hand, a polymorphic-polytypic composite structural change on the M011(Orth II)→M101 transition is accomplished through two kinds of molecular displacements occurring alternately along the stacking direction of molecular layers. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 121
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 13803969
- Full Text :
- https://doi.org/10.1063/1.1760072