What is it about?
The room temperature structure of the organic compound p-chlorobenzamide is described as a classical three-dimensional periodic superstructure and also as a commensurately modulated structure in (3+1)-dimensional superspace. The structure undergoes a phase transition at higher temperature. In this phase transition the modulation vanishes as indicated by the disappearance of the satellite reflections.
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Why is it important?
The high temperature structure is very close to the reference structure of the modulated model at room temperature. The phase transition can therefore be understood as a loss of the modulation at high temperature.
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This page is a summary of: The (3 + 1)-dimensional superspace description of the commensurately modulated structure of p-chlorobenzamide (α-form) and its relation to the γ-form, Zeitschrift für Kristallographie - Crystalline Materials, January 2003, De Gruyter,
DOI: 10.1524/zkri.218.7.507.20713.
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