Fig. 4. Mercury intrusion–extrusion curves recorded for 1 (a) and 2 (b) at room temperature. The insets reveal a closer look on the data in the region of the op–cp phase transition, which is irreversible for 1 and reversible for 2. Lines represent a guide to the eye only. Data have been corrected by a blank measurement. N.B. Although data were measured from 10–3 MPa, for clarity, only the range 10–2 to 210 MPa is shown.
