  Recent controversy about the space group of the low temperature superlattice
phase of Pb(Zr0.52Ti0.48)O3 is settled. It is shown that the R3c space group
for the superlattice phase cannot correctly account for the peak positions of
the superlattice reflections present in the neutron diffraction patterns. The
correct space group is reconfirmed to be Cc. A comparison of the atomic
coordinates of Cc and Cm space groups is also presented to show that in the
absence of superlattice reflections, as is the case with XRD data, one would
land up in the Cm space group. This superlattice phase is found to coexist with
another monoclinic phase of Cm space group.
