In α-C5n-HNO3 the condensation of the room-temperature liquid-like diffuse ring associated with the disorder-order transition around 250 K is studied and the low-temperature. superstructure is examined.
It is found that β-C8n-HNO3 exhibits an in-plane incommensurate order at room temperature.
Two types of graphite-Br2 are found. Low-temperature phase transitions in C8Br are observed at T1 ≍ 277 K and T2 ≍ 297 K. The room-temperature structure of C14Br is reexamined. Special attention is given to diffuse scattering and incommensurability.
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Kindly provided by Mr.Schudnel (Museum d’Histoire Naturelle, Paris).
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Moret, R., Comes, R., Furdin, G. et al. Single-Crystal X-Ray Scattering Study of Superstructures and Phase Transitions in Graphite-HNO3 and Graphite-Br2 Intercalation Compounds. MRS Online Proceedings Library 20, 27 (1982). https://doi.org/10.1557/PROC-20-27