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Zusammenfassung:
The phase behaviour under pressure of four members (n = 7, 9, 10 and 11) of the hexaalkyloxytri-benzocyclononene homologous series have been investigated by thermo-barometric analysis. The pressure-temperature phase diagrams are determined. For n = 7, 9 and 10 a new stable phase is detected; it seems it is a Pg phase. For n = 7 that phase is monotropic under atmospheric pressure; two virtual transitions are deduced by extrapolation. Volume changes for the transitions and ratio of the expansion and isothermal compressibility coefficients for the phases are given.
