The linear aliphatic compounds F(CF 2 ) 10 CH 2 CHI(CH 2 ) n−2 H (6≤n≤12) all form a stable smectic B phase. The existence of a very narrow smectic A phase between the smectic B and isotropic phases is also inferred. Results from transmitted polarized light microscopy, thermal analysis and x-ray diffraction show that the phase transitions are dominated by intermolecular interactions that involve the iodine atoms
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Viney et al. (1990) studied this question.
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