  Total scattering neutron powder diffraction measurements were performed on
the tetragonal phase (a=6.4202(5) {\AA}, c=9.5762(12) {\AA}) of $CI_4$. The
experiments were followed by Reverse Monte Carlo (for POWder diffraction
(RMCPOW)) modeling. Detailed analyses of the resulting particle configurations
revealed that the observed diffuse scattering originates from the libration of
the molecules. By examining the partial radial distribution functions a
distinct carbon-iodine peak at 4.5 {\AA} is found, which appears as a
consequence of corner-to-face mutual alignment of two molecules. The occurrence
of edge-to-edge alignments is also significant within the first carbon-carbon
coordination shell.
