Several collective rotational bands have been established in doubly-odd ${}_{}{}^{114}{}_{}{}^{}\mathrm{Sb}$ extending to high spin (∼35ħ) and excitation energy (∼18 MeV). Two pairs of strongly coupled negative-parity sequences were observed at low spin consisting of stretched quadrupole transitions and interlinking M1 dipole transitions. These bands are intepreted in terms of the π[404]9/$2^{+}$ orbital. A third pair of signature-partner bands was established; however, no interlinking M1 transitions were observed in this case. These bands are associated with the π[550]1/$2^{\mathrm{-}}$ intruder orbital, and the rotational properties are remarkably similar to those of a π${\mathit{h}}_{11/2}$ ‘‘intruder’’ band in ${}_{}{}^{113}{}_{}{}^{}\mathrm{Sb}$ having enhanced quadrupole deformation (${\mathrm{\beta }}_2$∼0.32). The experimental results are discussed with the aid of total Routhian surface and Woods-Saxon cranking calculations.

• Received 13 April 1994

DOI:https://doi.org/10.1103/PhysRevC.50.2297