The unit cell of the PHTP-CHCl₃ inclusion compound (a = 25.08 Å;c = 4.78 Å; space group P6₃\m) is three times as big as in the PHTP-n-hydrocarbon series. Patterson considerations allow location of the C atoms; the structure is then refined through Fourier and least-squares methods. The arrangement of the PHTP molecules is essentially analogous to that found in the above mentioned series. The CHCl₃ molecules are included into two kinds of channels having different shapes; their marked anisotropicity suggests a large positional freedom along the channel axis.