  The large-scale shell-model calculations have been performed for the
neutron-rich nuclei in the south region of $^{208}$Pb in the nuclear chart. The
weak interaction properties, such as the $\log ft$, average shape factor
values, half-lives, and neutron emission probabilities, are calculated for
these neutron-rich nuclei with the help of newly developed effective
interaction [Yuan et al., Phys. Rev. C 106, 044314 (2022)] for $^{208}$Pb
region. These calculations have been performed without truncation for a
particular model space, however, for some nuclei, a certain truncation has been
employed and particle-hole excitations are included in the case of
core-breaking nuclei. An extensive comparison with the experimental data has
been made and spin parities of several states have been proposed. In this
study, we have considered 270 transitions.
