  Spectroscopic information of hard-to-reach superheavy nuclei can be
invaluable in understanding the dynamics of nuclear systems at large values of
charge and volume. RIB factories of the next generation, such as FAIR, plan to
provide heavy ion beams at high energies to facilitate experimental access to
these mass regimes. In preparation of future experimental endeavours, a
systematic survey of available nuclear data, mainly energies and reduced
transition probabilities/lifetimes of short-lived first 2+ states in even-even
isotopes with Z=82, 84, 86 was undertaken. The principle motivation is to trace
the competition between collective and single-particle degrees of freedom in
the mass area just above Pb (Z=82), an area known to exhibit isomerism,
octupole degrees of freedom and shape coexistence. Existing data were compared
to the theoretical predictions using the analytical, parameter-free proxy-SU(3)
scheme, for neutron numbers N=96-116. The model was further employed to predict
currently unknown values for spectroscopic data in series of Pb, Po and Ra
isotopes.
