  We explore the behaviour of the inverse reduced density fluctuations and the
isobaric expansion coefficient using {\alpha},{\omega}-dibromoalkanes as an
example. Two different states are revealed far from the critical point: the
region of exponentially decaying fluctuations near the coexistence curve and
the state with longer correlations under sufficiently high pressures. The
crossing of the isotherms of the isobaric expansion coefficient occurs within
the PVT range of the mentioned transition. We discuss the interplay of this
crossing with the changes in molecular packing structure connected with the
analysed function of the density, which represents inverse reduced volume
fluctuations.
