Collective structures in doubly odd ${}^{120}\mathrm{I}$

High spin states in the doubly odd ${}^{120}\mathrm{I}$ nucleus have been investigated through in-beam gamma-ray spectroscopy following the ${}^{108}{\mathrm{P}\mathrm{d}+}^{16}\mathrm{O}$ and ${}^{114}{\mathrm{C}\mathrm{d}+}^{11}\mathrm{B}$ fusion-evaporation reactions. A new ΔI=1 collective band, based on the π${\mathrm{g}}_{7/2}$⊗υ${\mathrm{h}}_{11/2}$ quasiparticle configuration, has been identified. This band exhibits energy staggering in the odd-even spin states and is found to be intense as compared to the earlier known π${\mathrm{g}}_{9/2}^{\mathrm{-}1}$⊗υ${\mathrm{h}}_{11/2}$ nonstaggered band. A loss in collectivity is observed at the ${\mathrm{I}}^{\mathrm{\pi }}$${=(23\mathrm{}}^{\mathrm{-}}$) state, implying an abrupt band termination.