The systematic study of proton decay has provided considerable insight into the properties of nuclides beyond the proton drip line. In particular, the results have provided masses for odd-Z nuclides and spectroscopic factors that have been useful in charting the shifts of nuclear single-particle orbitals along the proton drip line. Most of the investigations have, however, been focused on properties of odd-Z proton emitters whose daughter nuclides are even-even nuclides. In this paper, the relationship between the structure of odd-odd nuclides and their odd-neutron daughters will be discussed. These effects will be illustrated by specific examples for structure and decay of odd-odd Sb nuclides. ©2000 American Institute of Physics.